Box, P. C., & Box, P. C. (1976). Manual of traffic engineering studies (4. edition --.). Arlington, Va.: Institute of Transportation Engineers.
Citación estilo ChicagoBox, Paul C., y Paul C. Box. Manual of Traffic Engineering Studies. 4. edition --. Arlington, Va.: Institute of Transportation Engineers, 1976.
Cita MLABox, Paul C., y Paul C. Box. Manual of Traffic Engineering Studies. 4. edition --. Arlington, Va.: Institute of Transportation Engineers, 1976.
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