MLA
Souvenir Post Card Co. (N.Y.). Cotton picking : African American men, African American women and African American children picking cotton along a path through a field with one of them carrying a basket and with filled bags on the ground [hand colored]. October 25, 1910. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/9010p2ngjp-cor.
APA, 6th edition
Souvenir Post Card Co. (N.Y.). (October 25, 1910)[Cotton picking : African American men, African American women and African American children picking cotton along a path through a field with one of them carrying a basket and with filled bags on the ground [hand colored]]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/9010p2ngjp-cor.
Chicago
Souvenir Post Card Co. (N.Y.), Cotton picking : African American men, African American women and African American children picking cotton along a path through a field with one of them carrying a basket and with filled bags on the ground [hand colored], October 25, 1910, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/9010p2ngjp-cor.