Gaya APA

Engel, C, A, J, S, R, M. (1982). Urology: guide for diagnosis and therapy . Stuttgart: Georg Theime Verlag.

Gaya MLA

Engel, Carl-Erich, Alken,, Jurgen, Sokeland,, Rainer, M.E.. "Urology: guide for diagnosis and therapy". Stuttgart: Georg Theime Verlag, 1982. Text.