“The Adulteration of Food.”
MLA
Hansen, Bert, 1944-. “The Adulteration of Food.”. Box 8, folder 15. 1880 May 5. https://collections.library.yale.edu/catalog/32327066.
APA, 6th edition
Hansen, Bert, 1944-. (["Box 8, folder 15"])(1880 May 5)[“The Adulteration of Food.”]. https://collections.library.yale.edu/catalog/32327066.