Cite

The Prime-Ear of Great Britain a new species of ass, presented by his M- to the Zoological Society / [graphic]

MLA

Heath, William, 1795-1840, printmaker. The Prime-Ear of Great Britain a new species of ass, presented by his M- to the Zoological Society / [graphic]. [approximately January 1828]. https://collections.library.yale.edu/catalog/33224191.

APA, 6th edition

Heath, William, 1795-1840, printmaker. ([approximately January 1828])[The Prime-Ear of Great Britain a new species of ass, presented by his M- to the Zoological Society / [graphic]]. https://collections.library.yale.edu/catalog/33224191.