MLA
An Advertisement for Conn Tenor Sax, with Leon (Choo) Berry Holding a Saxophone. 1940. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 70. https://digital.library.emory.edu/purl/542n5tb2vh-cor.
APA, 6th edition
An advertisement for Conn tenor sax, with Leon (Choo) Berry holding a saxophone (Box 70). (1940). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/542n5tb2vh-cor.
Chicago
“An Advertisement for Conn Tenor Sax, with Leon (Choo) Berry Holding a Saxophone.” Postcards. Robert Langmuir African American Photograph Collection, 1940. Box 70. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/542n5tb2vh-cor.