Cita APA (7a ed.)

Christopher, D. (1977). Textbook of surgery, the biological basis of modern surgical practice (11.ed.). Saunders Company.

Cita Chicago Style (17a ed.)

Christopher, Davis. Textbook of Surgery, the Biological Basis of Modern Surgical Practice. 11.ed. Washington, D.C: Saunders Company, 1977.

Cita MLA (9a ed.)

Christopher, Davis. Textbook of Surgery, the Biological Basis of Modern Surgical Practice. 11.ed. Saunders Company, 1977.