Medical practice ledger
MLA
Parker, Peter, 1804-1888. Medical practice ledger. Box 6, folder 5. 1845-1855. https://collections.library.yale.edu/catalog/16808826.
APA, 6th edition
Parker, Peter, 1804-1888. (["Box 6, folder 5"])(1845-1855)[Medical practice ledger]. https://collections.library.yale.edu/catalog/16808826.