Yoder, F. R. (1929). Introduction to agricultural economics. Thomas Y. Crowell company.
Citazione stile Chigago Style (17a edizione)Yoder, Fred Roy. Introduction to Agricultural Economics. New York: Thomas Y. Crowell company, 1929.
Citatione MLA (8a ed.)Yoder, Fred Roy. Introduction to Agricultural Economics. Thomas Y. Crowell company, 1929.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.