Não informado. (1923). Farm economics. Cornell University, New York State College of Agriculture.
Style de citation Chicago (17e éd.)Não informado. Farm Economics. Ithaca, NY: Cornell University, New York State College of Agriculture, 1923.
Style de citation MLA (8e éd.)Não informado. Farm Economics. Cornell University, New York State College of Agriculture, 1923.
Attention : ces citations peuvent ne pas être correctes à 100%.