Gaya APA

HAUBRICH, W, S., KALSER, M, H. (1985). Bockus Gastroenterology, Fourth Edition (Fourth Edition). Philadelphia: Binarupa Aksara.

Gaya MLA

HAUBRICH, William, S., KALSER, Martin, H. "Bockus Gastroenterology, Fourth Edition". Fourth Edition Philadelphia: Binarupa Aksara, 1985. Text.