Cite

Which is the dirtiest so foul the stains will be indelible. [graphic]

MLA

Heath, William, 1795-1840, printmaker. Which is the dirtiest so foul the stains will be indelible. [graphic]. [5 September 1820]. https://collections.library.yale.edu/catalog/33245832.

APA, 6th edition

Heath, William, 1795-1840, printmaker. ([5 September 1820])[Which is the dirtiest so foul the stains will be indelible. [graphic]]. https://collections.library.yale.edu/catalog/33245832.