MLA
Corporation., Elba Systems. Producers of Income : Pictures of Six African American Men in Various Professions. 1971. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/119f4qrfkc-cor.
APA, 6th edition
Corporation., E. S. (1971). Producers of income : pictures of six African American men in various professions (Box 72) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/119f4qrfkc-cor.
Chicago
Corporation., Elba Systems. “Producers of Income : Pictures of Six African American Men in Various Professions.” Photographic postcards. Robert Langmuir African American Photograph Collection, 1971. Box 72. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/119f4qrfkc-cor.