Rivas, E. T. (1979). The performance of growing-finishing pigs fed high levels of ipil-ipil (leucaena leucocephala Lam de Wit) leaf meal with and without ferrous sulfate supplement [microform]. Photoduplication Service. University of the Philippines Library.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Rivas, Elmedio T. The Performance of Growing-finishing Pigs Fed High Levels of Ipil-ipil (leucaena Leucocephala Lam De Wit) Leaf Meal with and Without Ferrous Sulfate Supplement [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1979.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Rivas, Elmedio T. The Performance of Growing-finishing Pigs Fed High Levels of Ipil-ipil (leucaena Leucocephala Lam De Wit) Leaf Meal with and Without Ferrous Sulfate Supplement [microform]. Photoduplication Service. University of the Philippines Library, 1979.