MLA
Knaffl & Bro. (Knoxville, Tenn.). Us fo' and no mo' : an African American man woman and a boy on a donkey. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/791sf7m0g0-cor.
APA, 6th edition
Knaffl & Bro. (Knoxville, Tenn.). (unknown)[Us fo' and no mo' : an African American man woman and a boy on a donkey]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/791sf7m0g0-cor.
Chicago
Knaffl & Bro. (Knoxville, Tenn.), Us fo' and no mo' : an African American man woman and a boy on a donkey, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/791sf7m0g0-cor.