MLA
African American Boy and Girl Posing Together at Pleasant Valley Farm. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 69. https://digital.library.emory.edu/purl/0171vhhmkr-cor.
APA, 6th edition
African American boy and girl posing together at Pleasant Valley Farm (Box 69). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0171vhhmkr-cor.
Chicago
“African American Boy and Girl Posing Together at Pleasant Valley Farm.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 69. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0171vhhmkr-cor.