Não informado. (1946). Annual cotton quality survey. U.S. Department of Agriculture, Production and Marketing.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Annual Cotton Quality Survey. Washington: U.S. Department of Agriculture, Production and Marketing, 1946.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Annual Cotton Quality Survey. U.S. Department of Agriculture, Production and Marketing, 1946.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.