Jardenil, N. A. (1976). A survey of the use of the vernacular as medium of instruction in twelve Philippine public schools with particular reference to Iloilo [microform]. Photoduplication Service. University of the Philippines Library.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Jardenil, Neva A. A Survey of the Use of the Vernacular as Medium of Instruction in Twelve Philippine Public Schools with Particular Reference to Iloilo [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1976.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Jardenil, Neva A. A Survey of the Use of the Vernacular as Medium of Instruction in Twelve Philippine Public Schools with Particular Reference to Iloilo [microform]. Photoduplication Service. University of the Philippines Library, 1976.