\cite{goossens:companion} — [ 2 ]
\cite{goossens:companion}
\cite{goossens:companion,hagen:metafun} — [ 2 , 1 ]
\cite{goossens:companion,hagen:metafun}
\cite[page 99ff]{goossens:companion} — [ 2 , page 99ff ]
\cite[page 99ff]{goossens:companion}
\cite[page 99ff]{goossens:companion,hagen:metafun} — [ 2 , 1 , page 99ff ]
\cite[page 99ff]{goossens:companion,hagen:metafun}
Hans Hagen. Metafun. Preliminary Version October 27, 2000, October 2000. http://www.pragma-ade.com.
M. von Goossens, S. Rahtz, and F. Mittelbach. The LaTeX Graphics Companion. Addison-Wesley Publishing Company, Reading, Mass., 1997.