MLA
Leighton & Valentine Co. (New York, N.Y.). Picking oranges in Florida : African American men on ladders. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/054kkwh740-cor.
APA, 6th edition
Leighton & Valentine Co. (New York, N.Y.). (unknown)[Picking oranges in Florida : African American men on ladders]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/054kkwh740-cor.
Chicago
Leighton & Valentine Co. (New York, N.Y.), Picking oranges in Florida : African American men on ladders, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/054kkwh740-cor.