APA (7th ed.) Citation

Texas. State Department of Highways and Public Transportation. (1991). Texas official highway travel map. The Dept..

Chicago Style (17th ed.) Citation

Texas. State Department of Highways and Public Transportation. Texas Official Highway Travel Map. Austin, Tex.: The Dept., 1991.

MLA (9th ed.) Citation

Texas. State Department of Highways and Public Transportation. Texas Official Highway Travel Map. The Dept., 1991.