U.S. Department of Agriculture. (1975). Shopper's guide: How to get the most for your money. Barrows Educational series.
Cita Chicago (17th ed.)U.S. Department of Agriculture. Shopper's Guide: How to Get the Most for Your Money. Woodbury, N.Y: Barrows Educational series, 1975.
Cita MLA (9th ed.)U.S. Department of Agriculture. Shopper's Guide: How to Get the Most for Your Money. Barrows Educational series, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.