MLA

of Kansas, State Highway Commission. Kansas State Highway System / Issued 1941, State Highway Commission of Kansas. State Highway Commission, 1941. https://collections.library.yale.edu/catalog/15814864.

APA, 6th edition

of Kansas, S. H. C. (1941). Kansas state highway system / issued 1941, State Highway Commission of Kansas. [Road maps]. State Highway Commission, https://collections.library.yale.edu/catalog/15814864.