MLA
D. Van Wagenen (Savannah, Ga.). The pickaninnies feast : three African American boys eating watermelon. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6386hdr7w9-cor.
APA, 6th edition
D. Van Wagenen (Savannah, Ga.). (unknown)[The pickaninnies feast : three African American boys eating watermelon]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6386hdr7w9-cor.
Chicago
D. Van Wagenen (Savannah, Ga.), The pickaninnies feast : three African American boys eating watermelon, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6386hdr7w9-cor.