Não informado. (1946). Annual cotton quality survey. U.S. Department of Agriculture, Production and Marketing.
Chicago (17e ed.) BronvermeldingNão informado. Annual Cotton Quality Survey. Washington: U.S. Department of Agriculture, Production and Marketing, 1946.
MLA (8e ed.) BronvermeldingNão informado. Annual Cotton Quality Survey. U.S. Department of Agriculture, Production and Marketing, 1946.
Let op: Deze citaties zijn niet altijd 100% accuraat.