Roadway design system: user manual.

APA Citation

United States. Federal Highway Administration., United States. Federal Highway Administration. Implementation Division., Texas. Highway Department. (1977). Roadway design system: user manual. Rev. ed. Washington, D.C.: Dept. of Transportation, Federal Highway Administration.

MLA Citation

United States. Federal Highway Administration, United States. Federal Highway Administration. Implementation Division, and Texas. Highway Department. Roadway Design System: User Manual. Rev. ed. Washington, D.C.: Dept. of Transportation, Federal Highway Administration, 1977.