MLA
C. T. Photochrom (Chicago, Ill.). Cotton pickers homeward bound : a group of African American men, African American women, African American boys and African American girls on a wagon with cotton in baskets pulled by two mules in a cotton field. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/320sqv9s85-cor.
APA, 6th edition
C. T. Photochrom (Chicago, Ill.). (unknown)[Cotton pickers homeward bound : a group of African American men, African American women, African American boys and African American girls on a wagon with cotton in baskets pulled by two mules in a cotton field]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/320sqv9s85-cor.
Chicago
C. T. Photochrom (Chicago, Ill.), Cotton pickers homeward bound : a group of African American men, African American women, African American boys and African American girls on a wagon with cotton in baskets pulled by two mules in a cotton field, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/320sqv9s85-cor.