MLA
Legerton, C. L. Fresh Vegetables : African American Man and Woman Balancing Baskets of Vegetables on Their Heads, to Be Sold. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 71. https://digital.library.emory.edu/purl/2322bvq86g-cor.
APA, 6th edition
Legerton, C. L. Fresh vegetables : African American man and woman balancing baskets of vegetables on their heads, to be sold (Box 71) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/2322bvq86g-cor.
Chicago
Legerton, C. L. “Fresh Vegetables : African American Man and Woman Balancing Baskets of Vegetables on Their Heads, to Be Sold.” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 71. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/2322bvq86g-cor.