MLA

Trudeau, G. B., 1948-. Doonesbury. Box 1971-75. 1972 November 12. https://collections.library.yale.edu/catalog/2053568.

APA, 6th edition

Trudeau, G. B., 1948-. (["Box 1971-75"])(1972 November 12)[Doonesbury]. https://collections.library.yale.edu/catalog/2053568.