MLA
Sewell, W. S. 1907. Oxford College Library (Oxford, Ga.), OP 1907. https://digital.library.emory.edu/purl/890rr4xhxn-cor.
APA, 6th edition
Sewell, W. S. (OP 1907). (1907). [Black-and-white photographs]. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/890rr4xhxn-cor.
Chicago
“Sewell, W. S.” Black-and-white photographs. Early Emory College Photographs, 1907. OP 1907. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/890rr4xhxn-cor.