Kopits, E., & Cropper, M. (2005). Why have traffic fatalities declined in industrialized countries?: Implications for pedestrians and vehicle occupants. World Bank.
Lua i Stíl Chicago (17ú heag.)Kopits, Elizabeth, agus Maureen Cropper. Why Have Traffic Fatalities Declined in Industrialized Countries?: Implications for Pedestrians and Vehicle Occupants. Washington, D.C: World Bank, 2005.
Lua MLA (8ú heag.)Kopits, Elizabeth, agus Maureen Cropper. Why Have Traffic Fatalities Declined in Industrialized Countries?: Implications for Pedestrians and Vehicle Occupants. World Bank, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.