Garber, N. J., & Hoel, L. A. (1999). Traffic and highway engineering (2nd ed.). Pacific Grove, CA: Brooks/Cole Publishing Company.
Παραπομπή Chicago StyleGarber, Nicolas J., and Lester A. Hoel. Traffic and Highway Engineering. 2nd ed. Pacific Grove, CA: Brooks/Cole Publishing Company, 1999.
Παραπομπή MLAGarber, Nicolas J., and Lester A. Hoel. Traffic and Highway Engineering. 2nd ed. Pacific Grove, CA: Brooks/Cole Publishing Company, 1999.
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