APA (7th ed.) Citation

Texas. Highway Department. (1973). Official highway travel map (1973 ed.). Texas Highway Department, Travel & Information Division.

Chicago Style (17th ed.) Citation

Texas. Highway Department. Official Highway Travel Map. 1973 ed. Austin, Tex.: Texas Highway Department, Travel & Information Division, 1973.

MLA (9th ed.) Citation

Texas. Highway Department. Official Highway Travel Map. 1973 ed. Texas Highway Department, Travel & Information Division, 1973.