American Gastroenterological Association. (2004). Gastroenterology. W.B. Saunders.
Chicagoスタイル(17版)引用形式American Gastroenterological Association. Gastroenterology. Philadelphia, Pa: W.B. Saunders, 2004.
MLA(8版)引用形式American Gastroenterological Association. Gastroenterology. W.B. Saunders, 2004.
警告: この引用は必ずしも正確ではありません.