Philippine Institute for Development Studies. (2014). Philippine agriculture saddled by poor irrigation systems. Philippine Institute for Development Studies.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Philippine Institute for Development Studies. Philippine Agriculture Saddled by Poor Irrigation Systems. Makati City: Philippine Institute for Development Studies, 2014.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Philippine Institute for Development Studies. Philippine Agriculture Saddled by Poor Irrigation Systems. Philippine Institute for Development Studies, 2014.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.