MLA
... Studio. A portrait of an African American man wearing a suit, vest and eyeglasses. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/491fj6q5cp-cor.
APA, 6th edition
... Studio. (unknown)[A portrait of an African American man wearing a suit, vest and eyeglasses]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/491fj6q5cp-cor.
Chicago
... Studio, A portrait of an African American man wearing a suit, vest and eyeglasses, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/491fj6q5cp-cor.