MLA
Rotograph Co. (New York, N.Y.). Aunt Betsy Holmes and her horseless carriage, Raleigh, N.C.. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/402q573n83-cor.
APA, 6th edition
Rotograph Co. (New York, N.Y.). (unknown)[Aunt Betsy Holmes and her horseless carriage, Raleigh, N.C.]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/402q573n83-cor.
Chicago
Rotograph Co. (New York, N.Y.), Aunt Betsy Holmes and her horseless carriage, Raleigh, N.C., unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/402q573n83-cor.