Gaya APA

M.[et.all], T. (2012). Sabiston textbook of surgery:Biological basic of modern surgical practice/20th edition (20). Philadelphia (USA): Elsevier.

Gaya MLA

M.[et.all], Townsend,Courtney. "Sabiston textbook of surgery:Biological basic of modern surgical practice/20th edition". 20 Philadelphia (USA): Elsevier, 2012. Text.