Cite

[Henry Duke of Warwick] [art original].

MLA

[Henry Duke of Warwick] [Art Original]. 0AD. https://collections.library.yale.edu/catalog/15947759.

APA, 6th edition

[Henry Duke of Warwick] [art original]. (0 C.E.). [Portraits, Ink drawings British 18th century]. https://collections.library.yale.edu/catalog/15947759.