MLA
Knaffl & Bro. (Knoxville, Tenn.). Wake up and join us : African American men and women singing from books and an African American man conducting. 1897 approx.. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/784zgmsbg3-cor.
APA, 6th edition
Knaffl & Bro. (Knoxville, Tenn.). (1897 approx.)[Wake up and join us : African American men and women singing from books and an African American man conducting]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/784zgmsbg3-cor.
Chicago
Knaffl & Bro. (Knoxville, Tenn.), Wake up and join us : African American men and women singing from books and an African American man conducting, 1897 approx., Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/784zgmsbg3-cor.