Gaya APA

DUMMEIER, E, F., HEFLEBOWER, R, B. (1940). Economics With Applications To Agricculture . New York: McGrawhill Book Company.

Gaya MLA

DUMMEIER, Edwin, F.., HEFLEBOWER, Richard, B.. "Economics With Applications To Agricculture". New York: McGrawhill Book Company, 1940. Teks.