[Photograph of Hartley sitting on stoop holding dog]
MLA
[Photograph of Hartley Sitting on Stoop Holding Dog]. 0AD. https://collections.library.yale.edu/catalog/16397477.
APA, 6th edition
[Photograph of Hartley sitting on stoop holding dog]. (0 C.E.). [Photographic prints, Photographs, Portraits]. https://collections.library.yale.edu/catalog/16397477.