Cite

[Portrait of a man with a beard] [art original].

MLA

[Portrait of a Man with a Beard] [Art Original]. 0AD. https://collections.library.yale.edu/catalog/17480319.

APA, 6th edition

[Portrait of a man with a beard] [art original]. (0 C.E.). [Portrait drawings, Graphite drawings, Pencil works, Watermarks (Paper) G & R Turner 1832]. https://collections.library.yale.edu/catalog/17480319.