MLA
20 Piece Set of Scales in Wooden Case Owned by Dr. William Hollinshead. 1870. Robert W. Woodruff Health Sciences Center. Library, Box 33. https://digital.library.emory.edu/purl/4644qrfjf1-cor.
APA, 6th edition
20 piece set of scales in wooden case owned by Dr. William Hollinshead (Box 33). (1870). [Scales (weighing devices)]. Robert W. Woodruff Health Sciences Center. Library. https://digital.library.emory.edu/purl/4644qrfjf1-cor.
Chicago
“20 Piece Set of Scales in Wooden Case Owned by Dr. William Hollinshead.” Scales (weighing devices). Health Sciences Center Library Artifact Collection, 1870. Box 33. Robert W. Woodruff Health Sciences Center. Library. https://digital.library.emory.edu/purl/4644qrfjf1-cor.