Cite

[I must play outside for two hours every day] [graphic].

MLA

[I Must Play Outside for Two Hours Every Day] [Graphic]. Ministry of Health, 0AD. https://collections.library.yale.edu/catalog/16047614.

APA, 6th edition

[I must play outside for two hours every day] [graphic]. (0 C.E.). [Posters, Offset lithographs]. Ministry of Health. https://collections.library.yale.edu/catalog/16047614.