MLA
MacFarlane, W. G. (William Godsoe), 1870-1942. Perfect harmony : an African American girl with a watermelon. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/617qnk98x2-cor.
APA, 6th edition
MacFarlane, W. G. (William Godsoe), 1870-1942. (unknown)[Perfect harmony : an African American girl with a watermelon]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/617qnk98x2-cor.
Chicago
MacFarlane, W. G. (William Godsoe), 1870-1942, Perfect harmony : an African American girl with a watermelon, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/617qnk98x2-cor.