Cite

[Portrait of Lady Mary Churchill] [art original].

MLA

Eccardt, John Giles, -1779, artist. [Portrait of Lady Mary Churchill] [art original].. [1752]. https://collections.library.yale.edu/catalog/16731046.

APA, 6th edition

Eccardt, John Giles, -1779, artist. ([1752])[[Portrait of Lady Mary Churchill] [art original].]. https://collections.library.yale.edu/catalog/16731046.