"Pasteur's Work."
MLA
Hansen, Bert, 1944-. "Pasteur's Work.". Box 13, folder 13. 1884 March 30. https://collections.library.yale.edu/catalog/32332480.
APA, 6th edition
Hansen, Bert, 1944-. (["Box 13, folder 13"])(1884 March 30)["Pasteur's Work."]. https://collections.library.yale.edu/catalog/32332480.