APA (7th ed.) Citation

Petty, D. F., & Michael, H. L. (1962). An analysis of traffic accidents on county roads. Purdue University.

Chicago Style (17th ed.) Citation

Petty, Donald F., and Harold L. Michael. An Analysis of Traffic Accidents on County Roads. Lafayette: Purdue University, 1962.

MLA (9th ed.) Citation

Petty, Donald F., and Harold L. Michael. An Analysis of Traffic Accidents on County Roads. Purdue University, 1962.