MLA
Dr. Robert Fulton Boyd, Center, and Six Other Men in Suits, Hat and Overcoats Standing in Front of Mercy Hospital, Nashville, TN. 1900. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 50. https://digital.library.emory.edu/purl/327mpg4f93-cor.
APA, 6th edition
Dr. Robert Fulton Boyd, center, and six other men in suits, hat and overcoats standing in front of Mercy Hospital, Nashville, TN (Box 50). (1900). [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/327mpg4f93-cor.
Chicago
“Dr. Robert Fulton Boyd, Center, and Six Other Men in Suits, Hat and Overcoats Standing in Front of Mercy Hospital, Nashville, TN.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, 1900. Box 50. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/327mpg4f93-cor.