MLA
Cecil Photo (Savannah, Ga.). Mamie Floyd and Mamie Wade Avant posing together, both wearing dresses. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/897kprr53g-cor.
APA, 6th edition
Cecil Photo (Savannah, Ga.). (unknown)[Mamie Floyd and Mamie Wade Avant posing together, both wearing dresses]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/897kprr53g-cor.
Chicago
Cecil Photo (Savannah, Ga.), Mamie Floyd and Mamie Wade Avant posing together, both wearing dresses, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/897kprr53g-cor.