Citazione Stile APA (7a Edizione)

Garber, N. J., & Hoel, L. A. (2020). Traffic and highway engineering (Enhanced fifth edition, SI edition.). Cengage Learning Inc.

Citazione stile Chigago Style (17a edizione)

Garber, Nicholas J., e Lester A. Hoel. Traffic and Highway Engineering. Enhanced fifth edition, SI edition. Boston: Cengage Learning Inc, 2020.

Citatione MLA (9a ed.)

Garber, Nicholas J., e Lester A. Hoel. Traffic and Highway Engineering. Enhanced fifth edition, SI edition. Cengage Learning Inc, 2020.