Cite

[Primary syphilis (hard chancre)] [graphic] and Первичный сифилис (твердый шанкр)

MLA

Guelin, M., and artist. [Primary Syphilis (Hard Chancre)] [Graphic], Первичный Сифилис (Твердый Шанкр). Narkomzdrav, RSFSR, 0AD. https://collections.library.yale.edu/catalog/16047232.

APA, 6th edition

Guelin, M., & artist. (0 C.E.). [Primary syphilis (hard chancre)] [graphic], Первичный сифилис (твердый шанкр) [Posters, Lithographs]. Narkomzdrav, RSFSR. https://collections.library.yale.edu/catalog/16047232.