\documentclass[journal, onecolumn]{IEEEtran}
\usepackage{showkeys}
\begin{document}
\begin{thebibliography}{100}
\bibitem{VeryLongAndNotAdvisableKeyforLynch1974}
A.~C. Lynch, ``{Precise Measurements on Dielectric and Magnetic Materials},''
{\em IEEE Transactions on Instrumentation and Measurement}, vol.~23, no.~4,
pp.~425--431, 1974.
\end{thebibliography}
\end{document}