MLA
Colourpicture Publishers (Firm). It's watermelon time. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/8128931zhk-cor.
APA, 6th edition
Colourpicture Publishers (Firm). (unknown)[It's watermelon time]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/8128931zhk-cor.
Chicago
Colourpicture Publishers (Firm), It's watermelon time, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/8128931zhk-cor.