MLA
H. A. Rost Printing & Publishing Co. (New York, N.Y.). Perfect bliss : African American woman eating watermelon. December 23, 1904. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/39995x69t0-cor.
APA, 6th edition
H. A. Rost Printing & Publishing Co. (New York, N.Y.). (December 23, 1904)[Perfect bliss : African American woman eating watermelon]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/39995x69t0-cor.
Chicago
H. A. Rost Printing & Publishing Co. (New York, N.Y.), Perfect bliss : African American woman eating watermelon, December 23, 1904, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/39995x69t0-cor.