APA Style

Sleisenger, M, H., Fordtran, J, S. (1989). Gastrointestinal disease :pathophysiology, diagnosis, management (4th ed.). Philadelphia :: W.B. Saunders,.

MLA Style

Sleisenger, Marvin, H.., Fordtran, John, S.. "Gastrointestinal disease :pathophysiology, diagnosis, management". 4th ed. Philadelphia :: W.B. Saunders,, 1989. Text.