توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

University of the Philippines (Diliman). Law Center & Labitag, E. A. (1981). Answers to bar examination questions in legal ethics and practical exercises (1975-2007). The Center.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

University of the Philippines (Diliman). Law Center و Eduardo A. Labitag. Answers to Bar Examination Questions in Legal Ethics and Practical Exercises (1975-2007). Quezon City: The Center, 1981.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

University of the Philippines (Diliman). Law Center و Eduardo A. Labitag. Answers to Bar Examination Questions in Legal Ethics and Practical Exercises (1975-2007). The Center, 1981.