Cite

[A woman and child buying from a street vendor] [art original].

MLA

Sandby, Paul, 1731-1809, artist. [A woman and child buying from a street vendor] [art original].. [1790?]. https://collections.library.yale.edu/catalog/11138649.

APA, 6th edition

Sandby, Paul, 1731-1809, artist. ([1790?])[[A woman and child buying from a street vendor] [art original].]. https://collections.library.yale.edu/catalog/11138649.