توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Denoga, O. B. (1976). The causes of failures among college students [microform]. Photoduplication Service University of the Philippines Library.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Denoga, Oscar B. The Causes of Failures Among College Students [microform]. Quezon City: Photoduplication Service University of the Philippines Library, 1976.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Denoga, Oscar B. The Causes of Failures Among College Students [microform]. Photoduplication Service University of the Philippines Library, 1976.