MLA
Johnston, William Robert. 1886. Oxford College Library (Oxford, Ga.), Box 2, Folder 101. https://digital.library.emory.edu/purl/023vt4b9dv-cor.
APA, 6th edition
Johnston, William Robert (Box 2, Folder 101). (1886). [Black-and-white photographs]. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/023vt4b9dv-cor.
Chicago
“Johnston, William Robert.” Black-and-white photographs. Early Emory College Photographs, 1886. Box 2, Folder 101. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/023vt4b9dv-cor.