Não informado. (1946). Annual cotton quality survey. U.S. Department of Agriculture, Production and Marketing.
Citação do estilo Chicago (17ª ed.)Não informado. Annual Cotton Quality Survey. Washington: U.S. Department of Agriculture, Production and Marketing, 1946.
Citação MLA (8ª ed.)Não informado. Annual Cotton Quality Survey. U.S. Department of Agriculture, Production and Marketing, 1946.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.