APA
Garber N. J., Hoel L. A., .Principles of traffic and highway engineering. : Cengage Learning.
Chicago
Garber Nicholas J, Hoel Lester A, .Principles of traffic and highway engineering. : Cengage Learning.
Harvard
Garber N. J., Hoel L. A., .Principles of traffic and highway engineering. : Cengage Learning.
MLA
Garber Nicholas J, Hoel Lester A, .: Cengage Learning. .