APA Style

Guyton, A, C., Hall, J, E. (2011). Guyton and Hall textbook of medical physiology : Textbook of medical physiology (12th ed.). Philadelphia: Saunders/Elsevier.

MLA Style

Guyton, Arthur, C., Hall, John, E. "Guyton and Hall textbook of medical physiology : Textbook of medical physiology". 12th ed. Philadelphia: Saunders/Elsevier, 2011. Text.