MLA
Countee Cullen, Harlem Poet. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 16. https://digital.library.emory.edu/purl/255z612jxq-cor.
APA, 6th edition
Countee Cullen, Harlem poet (Box 16). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/255z612jxq-cor.
Chicago
“Countee Cullen, Harlem Poet.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 16. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/255z612jxq-cor.