Gaya APA

Townsend, C. et al (2012). Sabiston Textbook Of Surgery : The Biological Basis Of Modern Surgical Practice (19). : Elsevier.

Gaya MLA

Townsend, Courtney. et al. "Sabiston Textbook Of Surgery : The Biological Basis Of Modern Surgical Practice". 19 : Elsevier, 2012. Text.