Cite

Knock and ye shall enter [graphic]

MLA

Heath, William, 1795-1840, printmaker. Knock and ye shall enter [graphic]. [ca. June 1829]. https://collections.library.yale.edu/catalog/16704592.

APA, 6th edition

Heath, William, 1795-1840, printmaker. ([ca. June 1829])[Knock and ye shall enter [graphic]]. https://collections.library.yale.edu/catalog/16704592.