Doonesbury
MLA
Trudeau, G. B., 1948-. Doonesbury. Box 1990. 1990 September 7. https://collections.library.yale.edu/catalog/2053168.
APA, 6th edition
Trudeau, G. B., 1948-. (["Box 1990"])(1990 September 7)[Doonesbury]. https://collections.library.yale.edu/catalog/2053168.