Christopher, D. (1977). Textbook of surgery, the biological basis of modern surgical practice.
Čikaški stil citiranja (17. izdanje)Christopher, Davis. Textbook of Surgery, the Biological Basis of Modern Surgical Practice. 1977.
MLA način citiranja (9. izdanje)Christopher, Davis. Textbook of Surgery, the Biological Basis of Modern Surgical Practice. 1977.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.