Citations without numbers

Question

in the last second I realized we shouldn't have numbers in our bibliography (such [1] Smith, J. ..). The bibliography is created with \printbibliography in the biblatex environment.

As I'm in an extreme hurry I hope someone has a solution/hint without a MWE, otherwise I'll update that.

Thanks a lot!

/Edit: That's a (not very short) MWE and I'm not sure how to include the external bib.-file, thats why I posted it seperately. Hope that's fine! Thanks again

%Dokumentklasse
\documentclass[a4paper,12pt]{scrreprt}
\usepackage[left= 3cm,right = 3cm, top = 2.5cm, bottom = 2cm]{geometry}
\usepackage[onehalfspacing]{setspace}
% ============= Packages =============

%test
\RedeclareSectionCommand[
  style=section,% <- change the style to section
  indent=0pt,
  beforeskip=1.5cm,
  afterindent=false,
  afterskip=1cm
]{chapter}



% Dokumentinformationen
\usepackage[
    pdftitle={xxx},
    pdfsubject={},
    pdfauthor={xxx},
    pdfkeywords={}, 
    %Links nicht einrahmen
    hidelinks
]{hyperref}


% Standard Packages
\usepackage[utf8]{inputenc}
\usepackage[ngerman]{babel}
\usepackage[T1]{fontenc}
\usepackage{graphicx, subfig}
\graphicspath{{img/}}
\usepackage{fancyhdr}
\usepackage{lmodern}
\usepackage{color}

% zusätzliche Schriftzeichen der American Mathematical Society
\usepackage{amsfonts}
\usepackage{amsmath}

%nicht einrücken nach Absatz
\setlength{\parindent}{0pt}

%Abkürzungsverzeichnis
\usepackage{acronym}

%biblatex
\usepackage[backend=biber,citestyle=authoryear, maxcitenames=2, sorting=nyt]{biblatex}
\DefineBibliographyStrings{ngerman}{andothers={et\ al\adddot}} % aus u.a. zu et al. machen
\addbibresource{Quellenverzeichnis.bib}

%captions
\usepackage[font=small,skip=2pt]{caption}

%times new roman
\renewcommand{\rmdefault}{ptm}
\addtokomafont{disposition}{\rmfamily}

%Arabische und Romanische Numerierung
\usepackage{chngcntr}
\counterwithout{equation}{chapter}

%Abbildungszählweise
\usepackage{chngcntr}
\counterwithout{figure}{chapter}

%Excel2Latex packages
\usepackage{booktabs, multicol, multirow}

%appendix
\usepackage{appendix}

%adjust caption font size
\usepackage{caption}

%tabellenunterschrift
\usepackage{threeparttable}

%rotieren tabelle
\usepackage{rotating}

%cellcolor
\usepackage{colortbl}
\usepackage{array}

%rand vermeiden
\usepackage{microtype}% 

%%%%%%%Dokumentenbeginn%%%%%

\begin{document}
lalala \textcite{Black}

\newpage
\printbibliography
\end{document}

and the bib.file:

@article{Black,
  title={The capital asset pricing model: Some empirical tests},
  author={Black, Fischer and Jensen, Michael C and Scholes, Myron and others},
  journal={Studies in the theory of capital markets},
  volume={81},
  number={3},
  pages={79--121},
  year={1972},
  publisher={Praeger, New York}
}

Answer 1

Usually one passes the desired style to biblatex with the style option, e.g.

style=authoryear,

But the code in the question says only citestyle=authoryear, and thus only sets the citation style.

\documentclass[ngerman]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{babel}
\usepackage{csquotes}

\usepackage[backend=biber, citestyle=authoryear, maxcitenames=2, sorting=nyt]{biblatex}

\addbibresource{biblatex-examples.bib}

\begin{document}
Lorem \autocite{sigfridsson}
\printbibliography
\end{document}

To understand what that does we need to understand a bit more about biblatex styles.

A biblatex style usually consists of two parts

1. the citation style and
2. the bibliography style.

The citation style controls how works are cited in the text (the result of \autocite, \cite, \parencite, ...) and the bibliography style controls the presentation in the bibliography (the result of \printbibliography). Sometimes there are dependencies between the two (for example with \fullcite, which is a citation command, but it prints the full bibliography entry as define by the bibliography style).

In general it is possible to set these two aspects of a style separately with citestyle and bibstyle. Not all styles support this completely, some custom styles have bibliography and citation styles that are so intertwined that they can only be used together. So for almost all intents and purposes one is better off just setting the option style, which sets both citestyle and bibstyle to the same value.

The default setting if you don't give any ...style option to biblatex is

style=numeric,

which is equivalent to

bibstyle=numeric, citestyle=numeric,

If we only load biblatex with the option citestyle=authoryear, that overrides the default citestyle setting and we end up with

bibstyle=numeric, citestyle=authoryear,

This means you get author-year citations, but a numeric bibliography. This is general not what people expect or want (the numbers in the numeric bibliography don't correspond to anything useful in the document, so they are just noise).

You probably want

style=authoryear,

to get a consistent style in both citations and the bibliography. Note that that option automatically sets sorting=nyt,, so that ca be dropped. In the comments it emerged that you also want dashed=false (Get full name twice in Bibliography) and want to set \bibitemsep to a non-zero value.

\documentclass[ngerman]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{babel}
\usepackage{csquotes}

\usepackage[backend=biber, style=authoryear, maxcitenames=2, dashed=false]{biblatex}

\setlength{\bibitemsep}{\itemsep}

\addbibresource{biblatex-examples.bib}

\begin{document}
Lorem \autocite{sigfridsson,nussbaum}
\printbibliography
\end{document}