How to include bibitem in bibliography?

[tekrajchhetri]

I have an extended bibliography in bibitem format but when I include it in my latex file, it's not working--no cite+bibliography not getting generated properly.

Current Output in chapter

Bibitem

\begin{thebibliography}{999} 

\bibitem[Su \em{et~al.}(2017)Su, Rudas, Zurada, Er, Chou, and
  Kwon]{su2017industry}
Su, S.F.; Rudas, I.J.; Zurada, J.M.; Er, M.J.; Chou, J.H.; Kwon, D.
\newblock Industry 4.0: A special section in IEEE access.
\newblock {\em IEEE Access} {\bf 2017}, {\em 5},~12257--12261.

\end{thebibliography}

The current bibitem is included directly in the chapter as I want chapter wise bibliography. With the .bib file, it's working fine.