MLA
Cochrane Co. (Palatka, Fla.). Grape fruit tree, Florida : African American man in front of a grapefruit tree holding two [hand colored]. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/361rfj6q89-cor.
APA, 6th edition
Cochrane Co. (Palatka, Fla.). (unknown)[Grape fruit tree, Florida : African American man in front of a grapefruit tree holding two [hand colored]]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/361rfj6q89-cor.
Chicago
Cochrane Co. (Palatka, Fla.), Grape fruit tree, Florida : African American man in front of a grapefruit tree holding two [hand colored], unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/361rfj6q89-cor.