[I must have a bowel movement at a regular time every day] [graphic].
MLA
[I Must Have a Bowel Movement at a Regular Time Every Day] [Graphic]. Ministry of Health, 0AD. https://collections.library.yale.edu/catalog/16047617.
APA, 6th edition
[I must have a bowel movement at a regular time every day] [graphic]. (0 C.E.). [Posters, Offset lithographs]. Ministry of Health. https://collections.library.yale.edu/catalog/16047617.