APA (7th ed.) Citation

Hirsch, T. J. (1968). Barrel protective barrier. Texas Transportation Institute, Texas A & M Research Foundation.

Chicago Style (17th ed.) Citation

Hirsch, T. J. Barrel Protective Barrier. [College Station, Tex.]: Texas Transportation Institute, Texas A & M Research Foundation, 1968.

MLA (9th ed.) Citation

Hirsch, T. J. Barrel Protective Barrier. Texas Transportation Institute, Texas A & M Research Foundation, 1968.