Cite

It's more than doubtful [graphic]

MLA

Heath, William, 1795-1840, printmaker. It's more than doubtful [graphic]. [1830?]. https://collections.library.yale.edu/catalog/15808733.

APA, 6th edition

Heath, William, 1795-1840, printmaker. ([1830?])[It's more than doubtful [graphic]]. https://collections.library.yale.edu/catalog/15808733.