Παραπομπή σε μορφή APA (7η εκδ.)

Não informado. (1978). Farmer cooperatives. Department of Agriculture, Agricultural Cooperative Service.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Não informado. Farmer Cooperatives. Washington: Department of Agriculture, Agricultural Cooperative Service, 1978.

Παραπομπή σε μορφή MLA (8th εκδ.)

Não informado. Farmer Cooperatives. Department of Agriculture, Agricultural Cooperative Service, 1978.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.