Polenda, F. C., & Elkins, R. E. (1989). A voice from the hills: Essays on the culture and world view of the Western Bukidnon Manobo people. Linguistic Society of the Philippines.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Polenda, Francisco Col-om, و Richard E. Elkins. A Voice from the Hills: Essays on the Culture and World View of the Western Bukidnon Manobo People. Manila: Linguistic Society of the Philippines, 1989.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Polenda, Francisco Col-om, و Richard E. Elkins. A Voice from the Hills: Essays on the Culture and World View of the Western Bukidnon Manobo People. Linguistic Society of the Philippines, 1989.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.