MLA
Adolph Selige Pub. Co. (St. Louis, Mo.). A watermelon problem. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/713905qfzm-cor.
APA, 6th edition
Adolph Selige Pub. Co. (St. Louis, Mo.). (unknown)[A watermelon problem]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/713905qfzm-cor.
Chicago
Adolph Selige Pub. Co. (St. Louis, Mo.), A watermelon problem, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/713905qfzm-cor.