Παραπομπή σε μορφή APA (7η εκδ.)

Não informado. (1924). Crops and markets. U.S. Department of Agriculture, Agricultural Marketing Service.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Não informado. Crops and Markets. Washington: U.S. Department of Agriculture, Agricultural Marketing Service, 1924.

Παραπομπή σε μορφή MLA (8th εκδ.)

Não informado. Crops and Markets. U.S. Department of Agriculture, Agricultural Marketing Service, 1924.

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