MLA

Trudeau, G. B., 1948-. Doonesbury. Box 1993-95. 1993 May 23. https://collections.library.yale.edu/catalog/2053577.

APA, 6th edition

Trudeau, G. B., 1948-. (["Box 1993-95"])(1993 May 23)[Doonesbury]. https://collections.library.yale.edu/catalog/2053577.