MLA

Cruikshank, George, 1792-1878, printmaker. Bumpology [graphic]. [24 February 1826]. https://collections.library.yale.edu/catalog/17339052.

APA, 6th edition

Cruikshank, George, 1792-1878, printmaker. ([24 February 1826])[Bumpology [graphic]]. https://collections.library.yale.edu/catalog/17339052.