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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:

enter image description here.

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[noadjust]{cite}
\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{\be}{\begin{equation}}
\newcommand{\ee}{\end{equation}}
\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}
\renewcommand{\headrulewidth}{0pt}}
\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}

enter image description here

moewe
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monalisa
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    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
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    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
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    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
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    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
  • Also: don't load packages twice. subfigure is obsolete and shouldn't be used. You can't possibly want lipsum in your real document and don't use it in your example. You almost certainly don't want filecontents either. epsfig is also unneeded, though I forget whether it is obsolete, deprecated or something else. Why do you have \normalsize in the preamble? \cite{} is going to produce the entry label from the bibliography entry. Since you are using thebibliography, the facilities you have are pretty basic, but doesn't \cite[17]{singh1} give the result you want? – cfr Jun 24 '18 at 19:27

0 Answers0