Severino, T. M. (1975). A study of the students who discontinued their studies in the University of San Carlos collegiate department during the period from 1959 to 1968 [microform]. Photoduplication Service, University of the Philippines Library.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Severino, Teodorica Moran. A Study of the Students Who Discontinued Their Studies in the University of San Carlos Collegiate Department During the Period from 1959 to 1968 [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1975.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Severino, Teodorica Moran. A Study of the Students Who Discontinued Their Studies in the University of San Carlos Collegiate Department During the Period from 1959 to 1968 [microform]. Photoduplication Service, University of the Philippines Library, 1975.