Cite

Eat fruit and vegetables. "Food will build a new America!" [graphic]

MLA

Eat Fruit and Vegetables. "Food Will Build a New America!" [Graphic]. The Saturday Evening Post, 0AD. https://collections.library.yale.edu/catalog/16047045.

APA, 6th edition

Eat fruit and vegetables. "Food will build a new America!" [graphic]. (0 C.E.). [Posters, Advertisements]. The Saturday Evening Post. https://collections.library.yale.edu/catalog/16047045.