Bautista, R. M., & Tecson, G. d. R. (1975). Philippine import flows from Japan and the United States: Accuracy of trade recordings. Institute of Economic Development and Research, School of Economics, University of the Philippines.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Bautista, Romeo Marcelo, و Gwendolyn del Rosario Tecson. Philippine Import Flows from Japan and the United States: Accuracy of Trade Recordings. [Quezon City]: Institute of Economic Development and Research, School of Economics, University of the Philippines, 1975.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Bautista, Romeo Marcelo, و Gwendolyn del Rosario Tecson. Philippine Import Flows from Japan and the United States: Accuracy of Trade Recordings. Institute of Economic Development and Research, School of Economics, University of the Philippines, 1975.