MLA

Hansen, Bert, 1944-. "Auf Dem Wege Zum Bicycle-Turnier. 'Puck on Wheels' mit 'all the Modern Improvements'.". Box 1, folder 14. 1883 June 6. https://collections.library.yale.edu/catalog/32325651.

APA, 6th edition

Hansen, Bert, 1944-. (["Box 1, folder 14"])(1883 June 6)["Auf Dem Wege Zum Bicycle-Turnier. 'Puck on Wheels' mit 'all the Modern Improvements'."]. https://collections.library.yale.edu/catalog/32325651.