APA (7th ed.) Citation

Gatchell, C. J., & Michie, J. D. (1974). Pendulum impact tests of wooden and steel highway guardrail posts. Forest Service, U.S. Dept. of Agriculture, Northeastern Forest Experiment Station.

Chicago Style (17th ed.) Citation

Gatchell, Charles J., and Jarvis Dale Michie. Pendulum Impact Tests of Wooden and Steel Highway Guardrail Posts. Upper Darby, Pa.: Forest Service, U.S. Dept. of Agriculture, Northeastern Forest Experiment Station, 1974.

MLA (9th ed.) Citation

Gatchell, Charles J., and Jarvis Dale Michie. Pendulum Impact Tests of Wooden and Steel Highway Guardrail Posts. Forest Service, U.S. Dept. of Agriculture, Northeastern Forest Experiment Station, 1974.