MLA
Brown Studio (Harrisburg, Pa.). An African American girl in a dress resting her hand on a table with a basket of flowers on it. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/433dz08krs-cor.
APA, 6th edition
Brown Studio (Harrisburg, Pa.). (unknown)[An African American girl in a dress resting her hand on a table with a basket of flowers on it]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/433dz08krs-cor.
Chicago
Brown Studio (Harrisburg, Pa.), An African American girl in a dress resting her hand on a table with a basket of flowers on it, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/433dz08krs-cor.