MLA
Our Gang Watermelon Party : Three Children Watching an African American Child and a Watermelon. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 64. https://digital.library.emory.edu/purl/433dz08ksm-cor.
APA, 6th edition
Our gang watermelon party : three children watching an African American child and a watermelon (Box 64). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/433dz08ksm-cor.
Chicago
“Our Gang Watermelon Party : Three Children Watching an African American Child and a Watermelon.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 64. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/433dz08ksm-cor.