Nguiagain, T. (1986). Trends and patterns of internal migration in the Philippines: 1970-1980. University of the Philippines School of Economics.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Nguiagain, Titus. Trends and Patterns of Internal Migration in the Philippines: 1970-1980. Quezon City: University of the Philippines School of Economics, 1986.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Nguiagain, Titus. Trends and Patterns of Internal Migration in the Philippines: 1970-1980. University of the Philippines School of Economics, 1986.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.