Cita APA (7th ed.)

Garber, N. J., & Hoel, L. A. (1999). Traffic and highway engineering (2a. ed.). PWS.

Cita Chicago (17th ed.)

Garber, Nicholas J., i Lester A. Hoel. Traffic and Highway Engineering. 2a. ed. Pacific Grove: PWS, 1999.

Cita MLA (9th ed.)

Garber, Nicholas J., i Lester A. Hoel. Traffic and Highway Engineering. 2a. ed. PWS, 1999.