MLA
Picking Cotton, near Helena, Ark. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 68. https://digital.library.emory.edu/purl/102c866t4n-cor.
APA, 6th edition
Picking cotton, near Helena, Ark. (Box 68). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/102c866t4n-cor.
Chicago
“Picking Cotton, near Helena, Ark.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 68. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/102c866t4n-cor.