Não informado. (1978). Farmer cooperatives. Department of Agriculture, Agricultural Cooperative Service.
Style de citation Chicago (17e éd.)Não informado. Farmer Cooperatives. Washington: Department of Agriculture, Agricultural Cooperative Service, 1978.
Style de citation MLA (8e éd.)Não informado. Farmer Cooperatives. Department of Agriculture, Agricultural Cooperative Service, 1978.
Attention : ces citations peuvent ne pas être correctes à 100%.