Cite

Don't be your own Doctor! If You're Sick—Report Sick. Never Give a Germ a Break.

MLA

Department, U. S. War. Don't Be Your Own Doctor! If You'Re Sick—Report Sick. Never Give a Germ a Break. U.S. Government Printing Office, 1944. https://collections.library.yale.edu/catalog/16046906.

APA, 6th edition

Department, U. S. W. (1944). Don't be your own Doctor! If You're Sick—Report Sick. Never Give a Germ a Break. [Posters (AAT)]. U.S. Government Printing Office. https://collections.library.yale.edu/catalog/16046906.