MLA
Unger Studio (Milwaukee, Wis.). African American man and woman sitting on a bench together, with a group of African American men and women standing behind them. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/549g4f4qtj-cor.
APA, 6th edition
Unger Studio (Milwaukee, Wis.). (unknown)[African American man and woman sitting on a bench together, with a group of African American men and women standing behind them]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/549g4f4qtj-cor.
Chicago
Unger Studio (Milwaukee, Wis.), African American man and woman sitting on a bench together, with a group of African American men and women standing behind them, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/549g4f4qtj-cor.