Cite

The figure of an antient pair of buttons [art original] : joined together by one firme solid neck ...

MLA

The Figure of an Antient Pair of Buttons [Art Original] : Joined Together by One Firme Solid Neck ... 0AD. https://collections.library.yale.edu/catalog/33202721.

APA, 6th edition

The figure of an antient pair of buttons [art original] : joined together by one firme solid neck ... (0 C.E.). [Ink drawings, Wash drawings]. https://collections.library.yale.edu/catalog/33202721.