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.
芝加哥风格引文University of the Philippines (Diliman). Law Center 与 Eduardo A. Labitag. Answers to Bar Examination Questions in Legal Ethics and Practical Exercises (1975-2007). Quezon City: The Center, 1981.
MLA引文University of the Philippines (Diliman). Law Center 与 Eduardo A. Labitag. Answers to Bar Examination Questions in Legal Ethics and Practical Exercises (1975-2007). The Center, 1981.
警告：这些引文格式不一定是100％准确.