MLA
Lena Horne in a Dress Standing in Front of a Window with Open Curtains. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 21. https://digital.library.emory.edu/purl/5805x69pn0-cor.
APA, 6th edition
Lena Horne in a dress standing in front of a window with open curtains (Box 21). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/5805x69pn0-cor.
Chicago
“Lena Horne in a Dress Standing in Front of a Window with Open Curtains.” Black-and-white photographs. Langmuir Deposit - Sept 2020, n.d. Box 21. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/5805x69pn0-cor.