# How to cite a result from a particular paper in a desired manner?

I want to mention a theorem from a paper. I am using the \cite reference style. I used the following code(WinEdt Latex):

We have following lemma $\cite{singh1}$ to find $**************************$.


And it is showing in following manner:

.

I want the Lemma to start as:

Lemma 1.2 [XYZ, 17]

How to write in this format?

My tex code and output:

\documentclass[12pt]{article}
\usepackage{latexsym}
\usepackage{amsthm,amsmath,amssymb,amsmath,amsfonts,graphicx,fancyhdr,algorithmic,longtable,listings,color,epsfig}
\usepackage{setspace}
\usepackage{subfigure}
\usepackage[labelsep=period]{caption}
\usepackage{array}
\usepackage[top=1in, bottom=1in, left=1in, right=1in]{geometry}
\usepackage{mathptmx}
\usepackage{enumerate}
\usepackage{filecontents}
\usepackage{mathtools}
\usepackage{graphicx,subfigure}
\usepackage{titlesec}
\titleformat*{\section}{\large\bfseries}% change font of section headings
\usepackage{lipsum} % for filler text
\def\demo{%
\par\topsep6pt plus6pt
\trivlist
\item[\hskip\labelsep\it Proof.]\ignorespaces}
\def\enddemo{\qed \endtrivlist}
\expandafter\let\csname enddemo*\endcsname=\enddemo
\newcommand{\tab}{\hspace*{2em}}
\newtheorem{Theorem}{Theorem}[section]
\newtheorem{Definition}{Definition}[section]
\newtheorem{Proposition}{Proposition}[section]
\newtheorem{Lemma}{Lemma}[section]
\newtheorem{Corollary}{Corollary}[section]
\newtheorem{Example}{Example}[section]
\newtheorem{Remark}{Remark}[section]
\newtheorem{Note}{Note}[section]
\newcommand{\R} {\mbox {$I\!\!R$}}
\newcommand{\bea}{\begin{eqnarray}}
\newcommand{\eea}{\end{eqnarray}}
\newcommand{\nn}{\nonumber}
\newcommand{\nii}{\noindent}
\newcommand{\bee}{\begin{eqnarray*}}
\newcommand{\eee}{\end{eqnarray*}}
\usepackage[us,12hr]{datetime}
\fancypagestyle{plain}{\fancyhf{}
\lfoot{\footnotesize Date :  {\ddmmyyyydate\today}}
\rfoot{ \footnotesize \thepage}
\pagestyle{plain}
\normalsize
\begin{document}
\title{Title of The Paper}
\date{}
\maketitle\begin{abstract}\noindent
The content of the abstract.
\end{abstract}
$~~${\bf Keywords}:
\section{Introduction}
\noindent Also, we have following lemma \cite{singh1} to .............
\begin{Lemma} \label{distconormal} \cite{singh1} Lemma Statement
\end{Lemma}
\begin{thebibliography}{85}
\bibitem{singh1} P. Singh , Article Title, Journal name.
\end{thebibliography}
\end{document}


• This will depend on the way you produce your lemmas (amsthm, theorem, thmtools  ...) and citations (cite, natbib, biblatex, ...). Please show us an MWE/MWEB. – moewe Jun 24 '18 at 12:31
• BTW: I don't see any reason to use \cite in math mode in your example We have following lemma \cite{singh1} to works just as well. – moewe Jun 24 '18 at 12:39
• You can mark up your code by indenting it by four spaces or by clicking the {} button. Please do not mark it as a quote, that makes it much harder to read (and quite hard to salvage in an edit). Since your MWE shows that you do not use biblatex I have removed that tag. – moewe Jun 24 '18 at 13:00
• @moewe This is the new thing that I learned today. Thanks a lot. – monalisa Jun 24 '18 at 13:06
• You should throw out stuff from your preamble that you don't use. Do you really need all packages you load (epsfig, setspace?; amssymb loads amsfonts; mathtools loads amsmath). Macros for \begin{...}/\end{....} like \bea, \eea and friends are also not recommended and eqnarray should be avoided. \newcommand{\R} {\mbox {$I\!\!R$}} looks quite hacky to me, I normally use \mathbb{R}, but that's probably a matter of taste. – moewe Jun 24 '18 at 13:26