MLA
Turnbull, Wally. Flower Vendor Takes His Colorful Assortment of Haitian Wild Flowers to Market. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 76. https://digital.library.emory.edu/purl/119f4qrfjf-cor.
APA, 6th edition
Turnbull, W. Flower vendor takes his colorful assortment of Haitian wild flowers to market (Box 76) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/119f4qrfjf-cor.
Chicago
Turnbull, Wally. “Flower Vendor Takes His Colorful Assortment of Haitian Wild Flowers to Market.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 76. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/119f4qrfjf-cor.