Horace Walpole in his study about the year 1769 [art original]
MLA
Bell, E., and artist. Horace Walpole in His Study about the Year 1769 [Art Original]. 0AD. https://collections.library.yale.edu/catalog/17469303.
APA, 6th edition
Bell, E., & artist. (0 C.E.). Horace Walpole in his study about the year 1769 [art original] [Portrait drawings, Watercolors, Ink drawings, Wash drawings]. https://collections.library.yale.edu/catalog/17469303.