MLA

Lewis, Jon, 1938-2009. Fieldwork I. Box 2, folder 15. 1966. https://collections.library.yale.edu/catalog/10186962.

APA, 6th edition

Lewis, Jon, 1938-2009. (["Box 2, folder 15"])(1966)[Fieldwork I]. https://collections.library.yale.edu/catalog/10186962.