Não informado. (1952). Marketing Research Report. U.S. Department of Agriculture, Bureau of Agricultural Economics.
Chicago-referens (17:e uppl.)Não informado. Marketing Research Report. Washington: U.S. Department of Agriculture, Bureau of Agricultural Economics, 1952.
MLA-referens (8:e uppl.)Não informado. Marketing Research Report. U.S. Department of Agriculture, Bureau of Agricultural Economics, 1952.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.