Mears, L. A. (1976). Comparative economic analysis of low-lift (surface) and tubewell irrigation projects in the Philippines [microform]. Photoduplication Service, University of the Philippines.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Mears, Leon Artemas. Comparative Economic Analysis of Low-lift (surface) and Tubewell Irrigation Projects in the Philippines [microform]. Quezon City: Photoduplication Service, University of the Philippines, 1976.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Mears, Leon Artemas. Comparative Economic Analysis of Low-lift (surface) and Tubewell Irrigation Projects in the Philippines [microform]. Photoduplication Service, University of the Philippines, 1976.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.