APA (7th ed.) Citation

Hirsch, T. J., & Ivey, D. L. (1969). Vehicle impact attenuation by modular crash cushion. Texas Transportation Institute, Texas A & M University.

Chicago Style (17th ed.) Citation

Hirsch, T. J., and Don L. Ivey. Vehicle Impact Attenuation by Modular Crash Cushion. College Station, Texas: Texas Transportation Institute, Texas A & M University, 1969.

MLA (9th ed.) Citation

Hirsch, T. J., and Don L. Ivey. Vehicle Impact Attenuation by Modular Crash Cushion. Texas Transportation Institute, Texas A & M University, 1969.