Cite

The Blues as they were, as they are / [graphic]

MLA

Heath, William, 1795-1840, printmaker. The Blues as they were, as they are / [graphic]. [13 April 1831]. https://collections.library.yale.edu/catalog/10971295.

APA, 6th edition

Heath, William, 1795-1840, printmaker. ([13 April 1831])[The Blues as they were, as they are / [graphic]]. https://collections.library.yale.edu/catalog/10971295.