MLA

Vernier, Charles, 1831-1887, printmaker. Les nouveaux médecins de la République [graphic]. [4 September 1849]. https://collections.library.yale.edu/catalog/17339679.

APA, 6th edition

Vernier, Charles, 1831-1887, printmaker. ([4 September 1849])[Les nouveaux médecins de la République [graphic]]. https://collections.library.yale.edu/catalog/17339679.