Não informado. (1952). Marketing Research Report. U.S. Department of Agriculture, Bureau of Agricultural Economics.
Chicago (17e ed.) BronvermeldingNão informado. Marketing Research Report. Washington: U.S. Department of Agriculture, Bureau of Agricultural Economics, 1952.
MLA (8e ed.) BronvermeldingNão informado. Marketing Research Report. U.S. Department of Agriculture, Bureau of Agricultural Economics, 1952.
Let op: Deze citaties zijn niet altijd 100% accuraat.