MLA

Carter, John, 1748-1817, artist. [An antique ewer of bronze; a greyhound reaching to drink forms the handle] [art original].. [approximately 1790]. https://collections.library.yale.edu/catalog/16729778.

APA, 6th edition

Carter, John, 1748-1817, artist. ([approximately 1790])[[An antique ewer of bronze; a greyhound reaching to drink forms the handle] [art original].]. https://collections.library.yale.edu/catalog/16729778.