APA-viite

Morton Grossman & V Speranza. (1977). Gastrointenstinal Hormones and Pathology of the Digestive System. New york.

Chicago-tyylinen lähdeviittaus

Morton Grossman ja V Speranza. Gastrointenstinal Hormones and Pathology of the Digestive System. New york, 1977.

MLA-viite

Morton Grossman ja V Speranza. Gastrointenstinal Hormones and Pathology of the Digestive System. New york, 1977.