Cite

[Edward Earl of Warwick] [art original].

MLA

[Edward Earl of Warwick] [Art Original]. 0AD. https://collections.library.yale.edu/catalog/15947760.

APA, 6th edition

[Edward Earl of Warwick] [art original]. (0 C.E.). [Portraits, Ink drawings British 18th century, Watermarks (Paper) J. Whatman]. https://collections.library.yale.edu/catalog/15947760.