Hammond, P. B., & Coppock, R. (1990). Valuing health risks, costs, and benefits for environmental decision making: Report of a conference. National Academy Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Hammond, P. Brett, و Rob Coppock. Valuing Health Risks, Costs, and Benefits for Environmental Decision Making: Report of a Conference. Washington, D.C.: National Academy Press, 1990.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Hammond, P. Brett, و Rob Coppock. Valuing Health Risks, Costs, and Benefits for Environmental Decision Making: Report of a Conference. National Academy Press, 1990.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.