MLA
We Are Holding Your Seat : Five African American Children Sitting around an Empty Chair. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 74. https://digital.library.emory.edu/purl/423612jm8p-cor.
APA, 6th edition
We are holding your seat : five African American children sitting around an empty chair (Box 74). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/423612jm8p-cor.
Chicago
“We Are Holding Your Seat : Five African American Children Sitting around an Empty Chair.” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 74. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/423612jm8p-cor.