Global Policy Research Institute, Simmons, R. A., & Coyle, E. D. (2014). Understanding the Global Energy Crisis. Published on behalf of the Global Policy Research Institute by Purdue University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Global Policy Research Institute, Richard A. Simmons, و Eugene D. Coyle. Understanding the Global Energy Crisis. West Lafayette, Indiana: Published on behalf of the Global Policy Research Institute by Purdue University Press, 2014.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Global Policy Research Institute, et al. Understanding the Global Energy Crisis. Published on behalf of the Global Policy Research Institute by Purdue University Press, 2014.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.