# Merging two methods of creating bibliography

I have two format of bibliography. First

\begin{thebibliography}{1}

\bibitem{notes} John W. Dower {\em Readings compiled for History
21.479.}  1991.

\bibitem{fo} Bob Tadashi Wakabayashi {\em Anti-Foreignism and Western
Learning in Early-Modern Japan} 1986: Harvard University Press.

\end{thebibliography}


and second, I have some bib file and I have the following command in my file:

\bibliographystyle{amsplain}
\bibliography{file1,file2}


How do I merge these two formats into a single list of references. I know that I can make a bibfile of the documents in "\begin{thebibliography}{1}" by adding entry by entry. But my actual list of files is large and I do not want to give my time to make a bib file entry by entry.

Is there a fast way to merge these two styles and bring them under a common list of references?

• If you want the sources re-sorted and merged into one list converting your thebibliography list to a .bib file is by far the easiest way. You should be able to convert the whole list with just some simple edits, no need to write entries one at a time – David Carlisle Jun 5 '17 at 18:29
• I could not understand it. Can you please explain how to convert the list in "thebibliography" to a .bib file with simple edits? – MathStudent Jun 5 '17 at 18:34
• it depends how regular your list is but for a start replace \\bibitem{[^{}]*)}(.*{\\em by @ARTICLE{\$1, and then just iterate with replace expressions until your list is valid bibtex, probably takes a few minutes of fiddling and then hand correction of any reaming odd entries that don't fit a pattern. – David Carlisle Jun 5 '17 at 18:39