Horace Mann [art original]
MLA
Astley, John, Sir, 1687-1772, artist. Horace Mann [art original]. 1751.. https://collections.library.yale.edu/catalog/16721004.
APA, 6th edition
Astley, John, Sir, 1687-1772, artist. (1751.)[Horace Mann [art original]]. https://collections.library.yale.edu/catalog/16721004.