MLA
Warren, William M. Physicians Call List and Record Notebook, Owned by Dr. George Washington Peddy. William M. Warren, 1901. Robert W. Woodruff Health Sciences Center. Library, Box 23. https://digital.library.emory.edu/purl/040xpnvx5t-cor.
APA, 6th edition
Warren, W. M. (1901). Physicians call list and record notebook, owned by Dr. George Washington Peddy (Box 23) [Medical records]. William M. Warren; Robert W. Woodruff Health Sciences Center. Library. https://digital.library.emory.edu/purl/040xpnvx5t-cor.
Chicago
Warren, William M. “Physicians Call List and Record Notebook, Owned by Dr. George Washington Peddy.” Medical records. Health Sciences Center Library Artifact Collection. Detroit, MI: William M. Warren, 1901. Box 23. Robert W. Woodruff Health Sciences Center. Library. https://digital.library.emory.edu/purl/040xpnvx5t-cor.