MLA
Layfield, J. M. 1893. Oxford College Library (Oxford, Ga.), Box 4, Folder 21. https://digital.library.emory.edu/purl/56341ns2sr-cor.
APA, 6th edition
Layfield, J. M. (Box 4, Folder 21). (1893). [Black-and-white photographs]. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/56341ns2sr-cor.
Chicago
“Layfield, J. M.” Black-and-white photographs. Early Emory College Photographs, 1893. Box 4, Folder 21. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/56341ns2sr-cor.