MLA
Three African American Girls in Dresses, with Bows in Their Hair, Standing on a Set of Stairs, with Planters behind Them. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/088qbzkh30-cor.
APA, 6th edition
Three African American girls in dresses, with bows in their hair, standing on a set of stairs, with planters behind them (Box 72). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/088qbzkh30-cor.
Chicago
“Three African American Girls in Dresses, with Bows in Their Hair, Standing on a Set of Stairs, with Planters behind Them.” 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/088qbzkh30-cor.