APA (7th ed.) Citation

Hobbs, F. D., & Richardson, B. D. (1967). Traffic engineering. Pergamon Press.

Chicago Style (17th ed.) Citation

Hobbs, F. D., and B. D. Richardson. Traffic Engineering. Oxford: Pergamon Press, 1967.

MLA (9th ed.) Citation

Hobbs, F. D., and B. D. Richardson. Traffic Engineering. Pergamon Press, 1967.

Warning: These citations may not always be 100% accurate.