MLA

Willis, John, 1957-. Tyvek Teepee Designed in Seattle, Man on Top is Maker Who Brought 30 to Donate. Box 9 (Oversize), folder 118. 2016 September-December. https://collections.library.yale.edu/catalog/33255182.

APA, 6th edition

Willis, John, 1957-. (["Box 9 (Oversize), folder 118"])(2016 September-December)[Tyvek Teepee Designed in Seattle, Man on Top is Maker Who Brought 30 to Donate]. https://collections.library.yale.edu/catalog/33255182.