APA (7th ed.) Citation

Edited by Porter , R. (1993). Companion encyclopedia of the history of: Medicine. Routledge.

Chicago Style (17th ed.) Citation

Edited by Porter , Roy. Companion Encyclopedia of the History of: Medicine. London: Routledge, 1993.

MLA (9th ed.) Citation

Edited by Porter , Roy. Companion Encyclopedia of the History of: Medicine. Routledge, 1993.