MLA
St. Petersburg Post Card Association (Saint Petersburg, Fla.). Florida products, pickaninnies and alligators [hand colored]. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6042rbnzwj-cor.
APA, 6th edition
St. Petersburg Post Card Association (Saint Petersburg, Fla.). (unknown)[Florida products, pickaninnies and alligators [hand colored]]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6042rbnzwj-cor.
Chicago
St. Petersburg Post Card Association (Saint Petersburg, Fla.), Florida products, pickaninnies and alligators [hand colored], unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6042rbnzwj-cor.