Gaya APA

Wu, G, Y., Pappano, A. (2009). Clinical Gastroenterology : Pocket Handbook of GI Pharmacotherapeutics . : Humana Press.

Gaya MLA

Wu, George, Y.., Pappano, Achilles. "Clinical Gastroenterology : Pocket Handbook of GI Pharmacotherapeutics". : Humana Press, 2009. Text.