Yale football cartoon by Garry Trudeau.
MLA
Trudeau, Garry. Yale Football Cartoon by Garry Trudeau. 1969. https://collections.library.yale.edu/catalog/10018858.
APA, 6th edition
Trudeau, G. (1969). Yale football cartoon by Garry Trudeau. [Books (part of)]. https://collections.library.yale.edu/catalog/10018858.