Cite

Imperial bears Greece or a peep into futurity [graphic]

MLA

Heath, William, 1795-1840, artist. Imperial bears Greece or a peep into futurity [graphic]. [1828]. https://collections.library.yale.edu/catalog/10970357.

APA, 6th edition

Heath, William, 1795-1840, artist. ([1828])[Imperial bears Greece or a peep into futurity [graphic]]. https://collections.library.yale.edu/catalog/10970357.