Cite

William Walker, aged 105 [art original]

MLA

William Walker, Aged 105 [Art Original]. 0AD. https://collections.library.yale.edu/catalog/16193692.

APA, 6th edition

William Walker, aged 105 [art original]. (0 C.E.). [Portrait drawings, Pencil drawings, Watercolors]. https://collections.library.yale.edu/catalog/16193692.