Philippine Institute for Development Studies. (1982). Summaries of completed research projects. Philippine Institute for Development Studies.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Philippine Institute for Development Studies. Summaries of Completed Research Projects. Makati, Metro Manila: Philippine Institute for Development Studies, 1982.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Philippine Institute for Development Studies. Summaries of Completed Research Projects. Philippine Institute for Development Studies, 1982.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.