MLA

Heath, Henry, active 1824-1850, printmaker. Caution! It is much easier to get into trouble than to get out of it! [graphic]. [between 1838 and 1840?]. https://collections.library.yale.edu/catalog/33379056.

APA, 6th edition

Heath, Henry, active 1824-1850, printmaker. ([between 1838 and 1840?])[Caution! It is much easier to get into trouble than to get out of it! [graphic]]. https://collections.library.yale.edu/catalog/33379056.