MLA
In the Cotton Field : African American Men, Women and Children Standing around a Horse-Drawn Cart in a Cotton Field. 1905. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 68. https://digital.library.emory.edu/purl/8773tx9618-cor.
APA, 6th edition
In the cotton field : African American men, women and children standing around a horse-drawn cart in a cotton field (Box 68). (1905). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/8773tx9618-cor.
Chicago
“In the Cotton Field : African American Men, Women and Children Standing around a Horse-Drawn Cart in a Cotton Field.” Photographic postcards. Robert Langmuir African American Photograph Collection, 1905. Box 68. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/8773tx9618-cor.