MLA
Sennett, T. S. (Glenn Falls, N.Y.). An African American boy wearing a hat and a ring playing a harmonica with his left hand. 1930 approx.. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/56341ns1wq-cor.
APA, 6th edition
Sennett, T. S. (Glenn Falls, N.Y.). (1930 approx.)[An African American boy wearing a hat and a ring playing a harmonica with his left hand]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/56341ns1wq-cor.
Chicago
Sennett, T. S. (Glenn Falls, N.Y.), An African American boy wearing a hat and a ring playing a harmonica with his left hand, 1930 approx., Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/56341ns1wq-cor.