# authoryear-style citation call-out with hand-built thebibliography environment

Suppose, I am using the simple thebibliography environment in my LatTeX document.

For example -

I am citing\cite(reference1) this.
\begin{thebibliography}{99}
\bibitem{reference1} Michel Goossens, Franck Mittelbach, and Alexander
Samarin, The LATEX Companion, Addison Wesley, 1998
\end{thebibliography}


The output is like -

I am citing[1] this.


But I want the output like -

I am citing[Goossens et al., 1998] this.


It is similar to apalike like style format as stated in here. The difference is that I don't want to use BibTeX to create the bibliography.

To achieve your objective, you need to (a) load the natbib package with the option square, (b) use \citep rather than \cite instructions, and (c) provide an explicit optional argument for each and every \bibitem entry. The optional argument must consist of (i) the author string, exactly as you wish it to appear in the body of the citation call-out -- here: "Goossens et~al." and (ii) the publication year in parentheses -- here: "(1994)".

\documentclass{article}
\usepackage[square]{natbib}
\begin{document}

I am citing\citep{reference1} this.

\begin{thebibliography}{99}

\bibitem[Goossens et~al.(1994)]{reference1} Michel Goossens, Frank Mittelbach, and
Alexander Samarin, The \LaTeX{} Companion, Addison Wesley, 1994.

\end{thebibliography}
\end{document}

• Thanks a lot. It worked. – PoreyS Dec 12 '20 at 6:57