APA-viite

Morton, J. (1979). Guts: The form and function of the digestive system (2.).

Chicago-tyylinen lähdeviittaus

Morton, John. Guts: The Form and Function of the Digestive System. 2. Edward Arnold and Co., London, 1979.

MLA-viite

Morton, John. Guts: The Form and Function of the Digestive System. 2. 1979.