Armentia, A. Y. (1975). The land authority aerial photogrammetry project as a means of accelerating land reform program of the government [microform]. Photoduplication Service, University of the Philippines Library.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Armentia, Abelardo Y. The Land Authority Aerial Photogrammetry Project as a Means of Accelerating Land Reform Program of the Government [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1975.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Armentia, Abelardo Y. The Land Authority Aerial Photogrammetry Project as a Means of Accelerating Land Reform Program of the Government [microform]. Photoduplication Service, University of the Philippines Library, 1975.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.