Pernia, E. M. (1982). The performance and prospects of small and intermediate size cities in the Philippines. University of the Philippines, School of Economics.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Pernia, Ernesto M. The Performance and Prospects of Small and Intermediate Size Cities in the Philippines. [Quezon City]: University of the Philippines, School of Economics, 1982.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Pernia, Ernesto M. The Performance and Prospects of Small and Intermediate Size Cities in the Philippines. University of the Philippines, School of Economics, 1982.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.