MLA

Contencin, P., and artist. Caroline, Queen of England [Graphic]. 0AD. https://collections.library.yale.edu/catalog/33111677.

APA, 6th edition

Contencin, P., & artist. (0 C.E.). Caroline, Queen of England [graphic] [Amateur works, Portrait drawings, Ink drawings, Watercolors, Watermarks (Paper) Weatherley & Lane 1818]. https://collections.library.yale.edu/catalog/33111677.