MLA
Adolph Selige Pub. Co. (St. Louis, Mo.). Cotton pickers : a line of African American men and African American women in a cotton field, one man with a basket of cotton on his shoulder, one man with his hand on a basket of cotton on the ground and one woman also with her hand on a basket. March 9, 1906. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/9182jm642b-cor.
APA, 6th edition
Adolph Selige Pub. Co. (St. Louis, Mo.). (March 9, 1906)[Cotton pickers : a line of African American men and African American women in a cotton field, one man with a basket of cotton on his shoulder, one man with his hand on a basket of cotton on the ground and one woman also with her hand on a basket]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/9182jm642b-cor.
Chicago
Adolph Selige Pub. Co. (St. Louis, Mo.), Cotton pickers : a line of African American men and African American women in a cotton field, one man with a basket of cotton on his shoulder, one man with his hand on a basket of cotton on the ground and one woman also with her hand on a basket, March 9, 1906, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/9182jm642b-cor.