Cite

The Honble. Horace Walpole from a picture by Eckardt in the collection at Strawberry Hill / [graphic]

MLA

Greatbach, William, 1802- printmaker. The Honble. Horace Walpole from a picture by Eckardt in the collection at Strawberry Hill / [graphic]. 1840.. https://collections.library.yale.edu/catalog/16719149.

APA, 6th edition

Greatbach, William, 1802- printmaker. (1840.)[The Honble. Horace Walpole from a picture by Eckardt in the collection at Strawberry Hill / [graphic]]. https://collections.library.yale.edu/catalog/16719149.