MLA
Gem Art Studio (N.Y.). An African American man in a suit, resting his arm on a chair. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/542n5tb2tm-cor.
APA, 6th edition
Gem Art Studio (N.Y.). (unknown)[An African American man in a suit, resting his arm on a chair]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/542n5tb2tm-cor.
Chicago
Gem Art Studio (N.Y.), An African American man in a suit, resting his arm on a chair, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/542n5tb2tm-cor.