توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Kopits, E., & Cropper, M. (2005). Why have traffic fatalities declined in industrialized countries?: Implications for pedestrians and vehicle occupants. World Bank.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Kopits, Elizabeth, و Maureen Cropper. Why Have Traffic Fatalities Declined in Industrialized Countries?: Implications for Pedestrians and Vehicle Occupants. Washington, D.C: World Bank, 2005.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Kopits, Elizabeth, و Maureen Cropper. Why Have Traffic Fatalities Declined in Industrialized Countries?: Implications for Pedestrians and Vehicle Occupants. World Bank, 2005.