MLA

Liberez Les Prisonniers Politiques Noirs USA! [Graphic] : Free Huey Newton! 0AD. https://collections.library.yale.edu/catalog/2043437.

APA, 6th edition

Liberez les prisonniers politiques noirs USA! [graphic] : free Huey Newton! (0 C.E.). [Illustrations, Posters, Protest literature--France--Paris--1968, Protest posters--France--Paris--1968]. https://collections.library.yale.edu/catalog/2043437.