Cite

Square & round heads [graphic]

MLA

Mills, Isaac, 1770-1857, printmaker. Square & round heads [graphic]. published March 1797.. https://collections.library.yale.edu/catalog/16194274.

APA, 6th edition

Mills, Isaac, 1770-1857, printmaker. (published March 1797.)[Square & round heads [graphic]]. https://collections.library.yale.edu/catalog/16194274.