Cite

[Portrait of King Richard III and his Queen] [art original].

MLA

[Portrait of King Richard III and His Queen] [Art Original]. 0AD. https://collections.library.yale.edu/catalog/16831099.

APA, 6th edition

[Portrait of King Richard III and his Queen] [art original]. (0 C.E.). [Portrait drawings, Group portraits, Ink drawings British 19th century]. https://collections.library.yale.edu/catalog/16831099.