National Academy of Sciences. (1976). Energy for rural development: Renewable resources and alternative technologies for developing countries (1a. ed.). National Academy of Sciences.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Academy of Sciences. Energy for Rural Development: Renewable Resources and Alternative Technologies for Developing Countries. 1a. ed. Washington, D.C: National Academy of Sciences, 1976.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Academy of Sciences. Energy for Rural Development: Renewable Resources and Alternative Technologies for Developing Countries. 1a. ed. National Academy of Sciences, 1976.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.