MLA
Stovall, H. African American Mechanics Working on an Automobiles' Engine, with a Man Smoking a Cigar Writing on a Piece of Paper. 1946. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 30. https://digital.library.emory.edu/purl/600ns1rnfb-cor.
APA, 6th edition
Stovall, H. (1946). African American mechanics working on an automobiles' engine, with a man smoking a cigar writing on a piece of paper (Box 30) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/600ns1rnfb-cor.
Chicago
Stovall, H. “African American Mechanics Working on an Automobiles' Engine, with a Man Smoking a Cigar Writing on a Piece of Paper.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, 1946. Box 30. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/600ns1rnfb-cor.