[Henry Trail Erskine seated on a chair] [art original].
MLA
[Henry Trail Erskine Seated on a Chair] [Art Original]. 0AD. https://collections.library.yale.edu/catalog/15815212.
APA, 6th edition
[Henry Trail Erskine seated on a chair] [art original]. (0 C.E.). [Portrait drawings, Watercolors British 18th century, Paintings British 18th century]. https://collections.library.yale.edu/catalog/15815212.