Ong Pe, W. J. B. (2011). Greenfield approach to the reference network benchmarking methodology for performance-based regulation of distribution utilities. College of Engineering, University of the Philippines Diliman.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ong Pe, Warren John B. Greenfield Approach to the Reference Network Benchmarking Methodology for Performance-based Regulation of Distribution Utilities. Quezon City: College of Engineering, University of the Philippines Diliman, 2011.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Ong Pe, Warren John B. Greenfield Approach to the Reference Network Benchmarking Methodology for Performance-based Regulation of Distribution Utilities. College of Engineering, University of the Philippines Diliman, 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.