MLA
Standard Art Studio Theatrical Photographers (Philadelphia, Pa.). Portrait of an African American woman. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/883xsj3v3j-cor.
APA, 6th edition
Standard Art Studio Theatrical Photographers (Philadelphia, Pa.). (unknown)[Portrait of an African American woman]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/883xsj3v3j-cor.
Chicago
Standard Art Studio Theatrical Photographers (Philadelphia, Pa.), Portrait of an African American woman, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/883xsj3v3j-cor.