United States. Bureau of Agricultural Economics. (1931). [Regulations of the Department of Agriculture under the United States Cotton standards act. Government Printing Office.
Citação do estilo Chicago (17ª ed.)United States. Bureau of Agricultural Economics. [Regulations of the Department of Agriculture Under the United States Cotton Standards Act. Washington: Government Printing Office, 1931.
Citação MLA (8ª ed.)United States. Bureau of Agricultural Economics. [Regulations of the Department of Agriculture Under the United States Cotton Standards Act. Government Printing Office, 1931.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.