MLA
Three African American Girls under an Umbrella, Leaning on a Fence [Hand Colored]. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/897kprr50r-cor.
APA, 6th edition
Three African American girls under an umbrella, leaning on a fence [hand colored] (Box 72). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/897kprr50r-cor.
Chicago
“Three African American Girls under an Umbrella, Leaning on a Fence [Hand Colored].” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 72. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/897kprr50r-cor.