MLA
Pen Mar Souvenir Co. (Pen mar, Pa.). Dining room, Pen Mar Park, Pa. [hand colored]. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/375dbrv17j-cor.
APA, 6th edition
Pen Mar Souvenir Co. (Pen mar, Pa.). (unknown)[Dining room, Pen Mar Park, Pa. [hand colored]]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/375dbrv17j-cor.
Chicago
Pen Mar Souvenir Co. (Pen mar, Pa.), Dining room, Pen Mar Park, Pa. [hand colored], unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/375dbrv17j-cor.