MLA

Eat 3 Well-Balanced Meals Every Day. Eat the Basic 7 Every Day! [Graphic]. U. S. Department of Agriculture -- War Food Administration, U. S. Government Printing Office, 1943. https://collections.library.yale.edu/catalog/16046932.

APA, 6th edition

Eat 3 well-balanced meals every day. Eat the basic 7 every day! [graphic]. (1943). [Posters, War posters]. U. S. Department of Agriculture -- War Food Administration, U. S. Government Printing Office. https://collections.library.yale.edu/catalog/16046932.