Não informado. (2021). Farm Economics. Pennsylvannia State University, Cooperative Extension Service.
Style de citation Chicago (17e éd.)Não informado. Farm Economics. University Park, Pa: Pennsylvannia State University, Cooperative Extension Service, 2021.
Style de citation MLA (8e éd.)Não informado. Farm Economics. Pennsylvannia State University, Cooperative Extension Service, 2021.
Attention : ces citations peuvent ne pas être correctes à 100%.