University of the Philippines (Los Banos). College of Agriculture. Department of Development Communication. (1977). A student's manual of development journalism. DDC, UPLB.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)University of the Philippines (Los Banos). College of Agriculture. Department of Development Communication. A Student's Manual of Development Journalism. College, Laguna: DDC, UPLB, 1977.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)University of the Philippines (Los Banos). College of Agriculture. Department of Development Communication. A Student's Manual of Development Journalism. DDC, UPLB, 1977.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.