APA-viite

Roy, E. P. (1981). Economics: Applications to agriculture and agribusiness (3rd ed.). Danville, Ill: Interstate Printers & Publishers.

Chicago-tyylinen lähdeviittaus

Roy, Ewell P. Economics: Applications to Agriculture and Agribusiness. 3rd ed. Danville, Ill: Interstate Printers & Publishers, 1981.

MLA-viite

Roy, Ewell P. Economics: Applications to Agriculture and Agribusiness. 3rd ed. Danville, Ill: Interstate Printers & Publishers, 1981.

Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.