MLA

Trudeau, G. B., 1948-. Doonesbury. Box 1996. 1996 June 29. https://collections.library.yale.edu/catalog/2053529.

APA, 6th edition

Trudeau, G. B., 1948-. (["Box 1996"])(1996 June 29)[Doonesbury]. https://collections.library.yale.edu/catalog/2053529.