Não informado. (1934). News for farmer cooperatives. Department of Agriculture, Farmers Cooperative Service.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. News for Farmer Cooperatives. Washington: Department of Agriculture, Farmers Cooperative Service, 1934.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. News for Farmer Cooperatives. Department of Agriculture, Farmers Cooperative Service, 1934.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.