"Quacks of a Feather. He will be 'at home,' and the doctors will agree."
MLA
Hansen, Bert, 1944-. "Quacks of a Feather. He will be 'at home,' and the doctors will agree.". Box 4, folder 18. 1880 April 3. https://collections.library.yale.edu/catalog/32330088.
APA, 6th edition
Hansen, Bert, 1944-. (["Box 4, folder 18"])(1880 April 3)["Quacks of a Feather. He will be 'at home,' and the doctors will agree."]. https://collections.library.yale.edu/catalog/32330088.