Não informado. (1923). Farm economics. Cornell University, New York State College of Agriculture.
Cita Chicago Style (17a ed.)Não informado. Farm Economics. Ithaca, NY: Cornell University, New York State College of Agriculture, 1923.
Cita MLA (8a ed.)Não informado. Farm Economics. Cornell University, New York State College of Agriculture, 1923.
Precaución: Estas citas no son 100% exactas.