United States. Dept. of Agriculture. (1975). Shopper's guide: How to get the most for your money. Barron's Educational Series.
Chicago-referens (17:e uppl.)United States. Dept. of Agriculture. Shopper's Guide: How to Get the Most for Your Money. Woodbury, N.Y: Barron's Educational Series, 1975.
MLA-referens (9:e uppl.)United States. Dept. of Agriculture. Shopper's Guide: How to Get the Most for Your Money. Barron's Educational Series, 1975.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.