Cita APA

Herman, D. J., & Valentine, S. (1981). Transportation-energy statistics catalog. Berkeley, Calif.: Institute of Transportation Studies University of California.

Citación estilo Chicago

Herman, Douglas J., y Susan Valentine. Transportation-energy Statistics Catalog. Berkeley, Calif.: Institute of Transportation Studies University of California, 1981.

Cita MLA

Herman, Douglas J., y Susan Valentine. Transportation-energy Statistics Catalog. Berkeley, Calif.: Institute of Transportation Studies University of California, 1981.