[Half portrait sketch of a man, obscured]
MLA
[Half Portrait Sketch of a Man, Obscured]. 0AD. https://collections.library.yale.edu/catalog/2033416.
APA, 6th edition
[Half portrait sketch of a man, obscured]. (0 C.E.). [Drawings, Sketchbooks]. https://collections.library.yale.edu/catalog/2033416.