East-West Environment and Policy Institute (Honolulu, Hawaii), & Carpenter, R. A. (1983). Natural systems for development: What planners need to know. McMillan.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)East-West Environment and Policy Institute (Honolulu, Hawaii), و Richard A. Carpenter. Natural Systems for Development: What Planners Need to Know. New York: McMillan, 1983.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)East-West Environment and Policy Institute (Honolulu, Hawaii), و Richard A. Carpenter. Natural Systems for Development: What Planners Need to Know. McMillan, 1983.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.