Padilla, N. O., & Sumayao, B. R. (2000). Indicators of sustainable development from the grassroots' perspective. Philippine Agricultural Scientist, The (Formerly the Philippine Agriculturist).
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Padilla, Noel O., و Blanda R. Sumayao. "Indicators of Sustainable Development from the Grassroots' Perspective." Philippine Agricultural Scientist, The (Formerly the Philippine Agriculturist) 2000.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Padilla, Noel O., و Blanda R. Sumayao. "Indicators of Sustainable Development from the Grassroots' Perspective." Philippine Agricultural Scientist, The (Formerly the Philippine Agriculturist), 2000.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.