MLA
Gilbert & Bacon (Philadelphia, Pa.). Mercy Douglass Hospital staff (?). unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/511xd2548p-cor.
APA, 6th edition
Gilbert & Bacon (Philadelphia, Pa.). (unknown)[Mercy Douglass Hospital staff (?)]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/511xd2548p-cor.
Chicago
Gilbert & Bacon (Philadelphia, Pa.), Mercy Douglass Hospital staff (?), unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/511xd2548p-cor.