Institute of Transportation Engineers. (1997). Trip generation: User's guide (6th ed.). Institute of Transportation Engineers.
Citazione stile Chigago Style (17a edizione)Institute of Transportation Engineers. Trip Generation: User's Guide. 6th ed. Washington, DC: Institute of Transportation Engineers, 1997.
Citatione MLA (9a ed.)Institute of Transportation Engineers. Trip Generation: User's Guide. 6th ed. Institute of Transportation Engineers, 1997.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.