Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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