MLA

Casa, Charles, and artist. Easy to Get... Syphilis and Gonorrhea / [Graphic]. U. S. Navy in conjunction with the Office of War Information, United States Government Printing Office, 0AD. https://collections.library.yale.edu/catalog/16046944.

APA, 6th edition

Casa, C., & artist. (0 C.E.). Easy to get... Syphilis and gonorrhea / [graphic] [Posters, War posters]. U. S. Navy in conjunction with the Office of War Information, United States Government Printing Office. https://collections.library.yale.edu/catalog/16046944.