MLA
Bonnell, J. F. 1871. Oxford College Library (Oxford, Ga.), Box 1, Folder 20. https://digital.library.emory.edu/purl/5977sqvbs5-cor.
APA, 6th edition
Bonnell, J. F. (Box 1, Folder 20). (1871). [Black-and-white photographs]. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/5977sqvbs5-cor.
Chicago
“Bonnell, J. F.” Black-and-white photographs. Early Emory College Photographs, 1871. Box 1, Folder 20. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/5977sqvbs5-cor.