Cite

Eat meat, poultry, or fish. "Only a healthy nation is a strong nation!" [graphic]

MLA

Eat Meat, Poultry, or Fish. "Only a Healthy Nation Is a Strong Nation!" [Graphic]. The Saturday Evening Post, 0AD. https://collections.library.yale.edu/catalog/16047043.

APA, 6th edition

Eat meat, poultry, or fish. "Only a healthy nation is a strong nation!" [graphic]. (0 C.E.). [Posters, Advertisements]. The Saturday Evening Post. https://collections.library.yale.edu/catalog/16047043.