University of the Philippines (Diliman). Law Center. Division of Research and Law Reform, University of the Philippines (Diliman). Law Center, Division of Research and Law Reform, Arroyo, B. C., & Frianeza, P. (1987). 1986 presidential issuances: An annotated compilation of executive orders, proclamations, memorandum orders, memorandum circulars and administrative orders, February 25 - December 31, 1986. U.P. Law Center.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)University of the Philippines (Diliman). Law Center. Division of Research and Law Reform, University of the Philippines (Diliman). Law Center, Division of Research and Law Reform, Basilisa C. Arroyo, و Perla Frianeza. 1986 Presidential Issuances: An Annotated Compilation of Executive Orders, Proclamations, Memorandum Orders, Memorandum Circulars and Administrative Orders, February 25 - December 31, 1986. Quezon City: U.P. Law Center, 1987.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)University of the Philippines (Diliman). Law Center. Division of Research and Law Reform, et al. 1986 Presidential Issuances: An Annotated Compilation of Executive Orders, Proclamations, Memorandum Orders, Memorandum Circulars and Administrative Orders, February 25 - December 31, 1986. U.P. Law Center, 1987.