MLA
Withers, William C. Man with Mustache in Uniform Holding Glove. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 19. https://digital.library.emory.edu/purl/808v9s4n8f-cor.
APA, 6th edition
Withers, W. C. Man with mustache in uniform holding glove (Box 19) [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/808v9s4n8f-cor.
Chicago
Withers, William C. “Man with Mustache in Uniform Holding Glove.” Card photographs (photographs). Langmuir Deposit - Sept 2020, n.d. Box 19. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/808v9s4n8f-cor.