Não informado. (1934). News for farmer cooperatives. Department of Agriculture, Farmers Cooperative Service.
Čikaški stil citiranja (17. izdanje)Não informado. News for Farmer Cooperatives. Washington: Department of Agriculture, Farmers Cooperative Service, 1934.
MLA način citiranja (8. izdanje)Não informado. News for Farmer Cooperatives. Department of Agriculture, Farmers Cooperative Service, 1934.
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