MLA
Morton, Issac Powell. 1900. Oxford College Library (Oxford, Ga.), OP 1900. https://digital.library.emory.edu/purl/750tqjq3bj-cor.
APA, 6th edition
Morton, Issac Powell (OP 1900). (1900). [Black-and-white photographs]. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/750tqjq3bj-cor.
Chicago
“Morton, Issac Powell.” Black-and-white photographs. Early Emory College Photographs, 1900. OP 1900. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/750tqjq3bj-cor.