MLA

Harding, G. P. (George Perfect), 1780-1853, artist. The great cloisters at Strawberry Hill [art original]. [ca. 1839?]. https://collections.library.yale.edu/catalog/11134575.

APA, 6th edition

Harding, G. P. (George Perfect), 1780-1853, artist. ([ca. 1839?])[The great cloisters at Strawberry Hill [art original]]. https://collections.library.yale.edu/catalog/11134575.