MLA
Wm. Sloan & Co. (Howell, Mich.). Portrait of an African American young woman. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/9289ghx3m8-cor.
APA, 6th edition
Wm. Sloan & Co. (Howell, Mich.). (unknown)[Portrait of an African American young woman]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/9289ghx3m8-cor.
Chicago
Wm. Sloan & Co. (Howell, Mich.), Portrait of an African American young woman, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/9289ghx3m8-cor.