[I must keep my body upright while sitting, standing, and walking] [graphic].
MLA
[I Must Keep My Body Upright While Sitting, Standing, and Walking] [Graphic]. Ministry of Health, 0AD. https://collections.library.yale.edu/catalog/16047608.
APA, 6th edition
[I must keep my body upright while sitting, standing, and walking] [graphic]. (0 C.E.). [Posters, Offset lithographs]. Ministry of Health. https://collections.library.yale.edu/catalog/16047608.