MLA

Pirodon, Eugène Louis, 1824-1908, printmaker. Une leçon de Velpeau [graphic]. [1864]. https://collections.library.yale.edu/catalog/17339507.

APA, 6th edition

Pirodon, Eugène Louis, 1824-1908, printmaker. ([1864])[Une leçon de Velpeau [graphic]]. https://collections.library.yale.edu/catalog/17339507.