MLA

Penagos, Rafael de, 1889-1954, artist. Asociacion nacional de medicos de lucha antituberculosa [graphic]. [1926]. https://collections.library.yale.edu/catalog/16047181.

APA, 6th edition

Penagos, Rafael de, 1889-1954, artist. ([1926])[Asociacion nacional de medicos de lucha antituberculosa [graphic]]. https://collections.library.yale.edu/catalog/16047181.