MLA
Schriver & Kibler (Harrisburg, Pa.). Portrait of Howard Bridgfree. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/13331zcrn0-cor.
APA, 6th edition
Schriver & Kibler (Harrisburg, Pa.). (unknown)[Portrait of Howard Bridgfree]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/13331zcrn0-cor.
Chicago
Schriver & Kibler (Harrisburg, Pa.), Portrait of Howard Bridgfree, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/13331zcrn0-cor.