توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

University of the Philippines (Diliman). Law Complex & Labitag, E. A. (2014). Answers to bar examination questions in taxation (1991-2010). Information and Publication Division, U.P. Law Complex.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

University of the Philippines (Diliman). Law Complex و Eduardo A. Labitag. Answers to Bar Examination Questions in Taxation (1991-2010). Quezon City: Information and Publication Division, U.P. Law Complex, 2014.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

University of the Philippines (Diliman). Law Complex و Eduardo A. Labitag. Answers to Bar Examination Questions in Taxation (1991-2010). Information and Publication Division, U.P. Law Complex, 2014.