MLA

Cruikshank, George, 1792-1878, printmaker. Zoological sketches [graphic]. [1 April 1834]. https://collections.library.yale.edu/catalog/10971371.

APA, 6th edition

Cruikshank, George, 1792-1878, printmaker. ([1 April 1834])[Zoological sketches [graphic]]. https://collections.library.yale.edu/catalog/10971371.