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# create a file ending in .bib for example:
refs.bib
# inside your .bib file add some references
@Article{Lehman2004a,
author = {Darrin R. Lehman and Chi-yue Chiu and Mark Schaller},
title = {Psychology and Culture},
year = {2004}
}
# in your .tex file cite the article
\cite{Lehman2004a}
# then print the bib at the end of your .tex file
\bibliographystyle{plain} # style can be changed to many different options. e.g. "apalike"
\bibliography{refs} # put the name of your bib here