Cite

Printed Material, Four Friends, posters (from Personal and Other Papers)

MLA

Kramer, Larry. Printed Material, Four Friends, Posters (from Personal and Other Papers). 0AD. https://collections.library.yale.edu/catalog/11052314.

APA, 6th edition

Kramer, L. (0 C.E.). Printed Material, Four Friends, posters (from Personal and Other Papers). https://collections.library.yale.edu/catalog/11052314.