MLA
Paul Robeson and Another Man on Coal in The Proud Valley. 1939. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 21. https://digital.library.emory.edu/purl/798mcvdnsf-cor.
APA, 6th edition
Paul Robeson and another man on coal in The Proud Valley (Box 21). (1939). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/798mcvdnsf-cor.
Chicago
“Paul Robeson and Another Man on Coal in The Proud Valley.” Black-and-white photographs. Langmuir Deposit - Sept 2020, 1939. Box 21. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/798mcvdnsf-cor.