APA (7th ed.) Citation

Perkins, S. R., & Harris, J. I. (1967). Traffic conflict characteristics: Accident potential at intersections. Research Laboratories, General Motors Corp..

Chicago Style (17th ed.) Citation

Perkins, Stuart R., and Joseph I. Harris. Traffic Conflict Characteristics: Accident Potential at Intersections. Warren, Mich.: Research Laboratories, General Motors Corp., 1967.

MLA (9th ed.) Citation

Perkins, Stuart R., and Joseph I. Harris. Traffic Conflict Characteristics: Accident Potential at Intersections. Research Laboratories, General Motors Corp., 1967.