Footnote - cite - Vgl. Jarchow/Rühmann (1988), S. 190

Question

I am writing my master thesis and I need this style of citation:

Vgl. Jarchow/Rühmann (1988), S. 190.

This should be in footnotes.

I have done two variation of is. But it still not correct. The brackets are not on the place where they should be.

That is how is looks like:

\documentclass[12pt,a4paper,bibtotocnumbered,% Literaturverzeichnis ins Inhaltsverzeichnis
liststotoc,bibliography=totoc]{scrreprt}
%Chapter weiter oben beginnen
\renewcommand*\chapterheadstartvskip{\vspace*{-1.5cm}}

\usepackage[utf8]{inputenc}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{graphicx}
\usepackage[left=2.50cm, right=2.50cm, top=2.50cm, bottom=2.50cm]{geometry}

%Deutsche Sprache
\usepackage[ngerman]{babel}
\usepackage{xcolor}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%%%%%%%%%%%%%%%%%% %BILIOGRAPHIE  
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\usepackage[backend=bibtex, style=authoryear-icomp, sorting=nyvt, sortcase=false, maxnames=8, maxbibnames=8, minbibnames=8]{biblatex}
\addbibresource{MyCollection.bib} 
\DeclareNameAlias{sortname}{last-first} 
\DeclareNameAlias{default}{last-first} 
\renewcommand*{\multinamedelim}{\addsemicolon\addspace}




\begin{document} 

Hallo\footnote{\Parencite*[Vgl. Dai/Milkman/Katherine/Riis][S.12.]{Dai2013}}

Ja\footcite[Vgl.][12.]{Goulet2017a}
\newpage
\printbibliography[title={Literaturverzeichnis}]
\end{document}

I would be grateful if someone could help me.

Answer 1

The styles of my biblatex-ext bundle make it easy to add a few parentheses that are not there in the standard styles.

Simply load ext-authoryear-comp instead of authoryear-comp and use \DeclareDelimFormat.

The MWE also uses \autocite as the go-to command and not \footcite.

\documentclass[12pt,a4paper,bibliography=totoc]{scrreprt}
\usepackage[utf8]{inputenc}
\usepackage[ngerman]{babel}
\usepackage{csquotes}
\usepackage[backend=bibtex, style=ext-authoryear-icomp,
  sorting=nyvt, sortcase=false,
  autocite=footnote,
  maxnames=8, minbibnames=8]{biblatex}
\addbibresource{biblatex-examples.bib} 

\DeclareInnerCiteDelims{footcite}{\bibopenparen}{\bibcloseparen}

\DeclareNameAlias{default}{family-given} 
\DeclareNameAlias{sortname}{default} 

\DeclareDelimFormat{multinamedelim}{\addsemicolon\space}

\begin{document} 
Lorem\autocite[Vgl.][12]{sigfridsson}

\printbibliography[title={Literaturverzeichnis}]
\end{document}

You are still using BibTeX instead of the more powerful Biber backend. I suggest you switch to backend=biber and tell your editor to run Biber for you (Biblatex with Biber: Configuring my editor to avoid undefined citations). You can only use the full set of biblatex's features with Biber.