Não informado. (1952). Marketing Research Report. U.S. Department of Agriculture, Bureau of Agricultural Economics.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Marketing Research Report. Washington: U.S. Department of Agriculture, Bureau of Agricultural Economics, 1952.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Marketing Research Report. U.S. Department of Agriculture, Bureau of Agricultural Economics, 1952.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.