Cite

"Concerning Robinson Crusoe."

MLA

Hansen, Bert, 1944-. "Concerning Robinson Crusoe.". Box 12, folder 10. 1913 January 15. https://collections.library.yale.edu/catalog/32326574.

APA, 6th edition

Hansen, Bert, 1944-. (["Box 12, folder 10"])(1913 January 15)["Concerning Robinson Crusoe."]. https://collections.library.yale.edu/catalog/32326574.