MLA
Two African American Woman, One in a Suit and Hat Holding a Pistol and Another One in a Dress. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 73. https://digital.library.emory.edu/purl/259c59zw5r-cor.
APA, 6th edition
Two African American woman, one in a suit and hat holding a pistol and another one in a dress (Box 73). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/259c59zw5r-cor.
Chicago
“Two African American Woman, One in a Suit and Hat Holding a Pistol and Another One in a Dress.” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 73. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/259c59zw5r-cor.