Carpenter, R. A. (1992). Private investment and trade opportunities in air and water pollution control. East-West Center Institue for Economic Development and Policy.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Carpenter, Richard A. Private Investment and Trade Opportunities in Air and Water Pollution Control. Honolulu: East-West Center Institue for Economic Development and Policy, 1992.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Carpenter, Richard A. Private Investment and Trade Opportunities in Air and Water Pollution Control. East-West Center Institue for Economic Development and Policy, 1992.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.