Cite

[Edward Harley, Earl of Oxford] [art original].

MLA

Vertue, George, 1684-1756, artist. [Edward Harley, Earl of Oxford] [art original].. [1725]. https://collections.library.yale.edu/catalog/33202650.

APA, 6th edition

Vertue, George, 1684-1756, artist. ([1725])[[Edward Harley, Earl of Oxford] [art original].]. https://collections.library.yale.edu/catalog/33202650.