Bibliography compilation problem

Question

I've my latex file as,

 % !TeX spellcheck = <none>
\documentclass[12pt]{book}
\usepackage{graphicx}
\usepackage{subfigure}
\usepackage{amsmath}
\usepackage{mathtools}
\usepackage{relsize}
\usepackage{array}
\usepackage{float}
\usepackage{multirow}
\usepackage{amssymb}
\usepackage{amsfonts}
\usepackage{textcomp}
\usepackage[left=3cm,right=2cm,top=3cm,bottom=2cm]{geometry}
\usepackage{fancyhdr}
\fancyhf{}
\cfoot{\thepage}
\pagestyle{fancy}
\setcounter{secnumdepth}{4}
\setcounter{tocdepth}{4}
\usepackage{tikz}
\usepackage{epigraph}
\usepackage{lipsum}
\usepackage{natbib}
%%\usepackage{biblatex}
%%\usepackage{bibtex}
\usepackage{hyperref}
\usepackage{filecontents}
\begin{document}
    %titlepage
    \thispagestyle{empty}
    \begin{center}
        %University logo
        \includegraphics[width=0.6\linewidth]{qau3.jpg}
        \par
        \vspace{1cm}
        %Thesis title
        {\LARGE{\textbf{Study of the Production of the Drell-Yan Cross-Section in $\mu^{-}\mu^{+}$ channel with $\sqrt{s} = 13 \;\; TeV$ using $2016$ CMS Data}\par}}
        \vspace{1cm}
        {\LARGE $\odot-\odot-\odot-\odot-\odot-\odot-\odot-\odot-\odot-\odot-\odot-\odot-\odot-\odot$}
        \newline\newline\newline
        %Author's name
    \textbf{{{ \underline{{\large Author:} Muhammad Jamshid}}}}
    \hfill
    \textbf{{{ \underline{{\large Supervisor:} Shamona Fawad Qazi}}}} \\
    {\normalsize { mjamshid@phys.qau.edu.pk}}
    \hfill
    {\normalsize { shamona@phys.qau.edu.pk}}
    \newline \newline
        %Degree
        {\large A thesis submitted for the partial fulfillment of degree of master of philosophy (M.Phil) in the department of physics, Quaid-I-Azam university, Islamabad\par}

        %Date
        {\Large September 2020}

\end{center}
\clearpage

\newpage
\chapter{Abstract}
\input{Abstract}
\chapter{Aknowledgement}
\input{Aknowledgement}
\chapter{Declaration}
\input{Declaration}
\chapter{Dedication to}
\input{Dedication}
\tableofcontents
\chapter{Introduction to the Standard Model}
\input{chapter 11}
\chapter{Relativistic Particle Kinematics}
\input{chapter 12}
\chapter{Accelerators and Colliders Experiments}
\input{chapter 13}
\chapter{Structure of Hadrons in QCD}
\input{chapter 14}
\chapter{Anaylsis and Results}
\input{chapter 15}
\chapter*{Conclusions}
\bibliography{References}
\bibliographystyle{thesisstyle}
\end{document}

But when I try to run it, I get "?" instead of citation number the bibliography does not compile and I get the following error......

I found no \bibdata command---while reading file My Thesis.aux
I found no \bibstyle command---while reading file My Thesis.aux
(There were 2 error messages)
Process exited with error(s)

Can anyone help how can I fix this problem.....???

Answer 1

BibTeX and Biber are no packages in the LaTeX sense, but backends (programs) to generate the bibliography that can be called from Natbib or BibLaTex. In order of flexibility, use BibLaTex(Biber), BibLaTex(BibTex) or NatBib(BibTex). The second, BibLaTex(BibTex), is currently the de facto standard.

1. The .bib file should be in your working directory, in this case References.bib, and have the proper format (sample1 sample2).
2. The .bst file should be in your working directory, in this case thesisstyle.bst.
3. The style should be set before the bibliography is generated, in this case:

\bibliography{References}
\bibliographystyle{thesisstyle}

4. Most importantly, the document body should include citations via the \cite command.
5. Before using BibTex/Biber, first compile the .tex file which will mark in the .aux file the required calls.

For detailed information, refer to this entry.