MLA
Groganphoto (Danville, Ill.). Room service at Homestead Hotel, Hot Springs, Va. : with an African American waiter with a tray on his head, some kids behind him and others in the background. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/259c59zw61-cor.
APA, 6th edition
Groganphoto (Danville, Ill.). (unknown)[Room service at Homestead Hotel, Hot Springs, Va. : with an African American waiter with a tray on his head, some kids behind him and others in the background]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/259c59zw61-cor.
Chicago
Groganphoto (Danville, Ill.), Room service at Homestead Hotel, Hot Springs, Va. : with an African American waiter with a tray on his head, some kids behind him and others in the background, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/259c59zw61-cor.