University of the Philippines. Law Center. Division of Continuing Legal Education & Romero, F. R. P. (1975). Labor relations law in transition: Proceedings of the Eleventh Annual Institute on Labor Relations Law, U.P. Law Center, Diliman, Quezon City. U.P. Law Center.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)University of the Philippines. Law Center. Division of Continuing Legal Education و Flerida Ruth P. Romero. Labor Relations Law in Transition: Proceedings of the Eleventh Annual Institute on Labor Relations Law, U.P. Law Center, Diliman, Quezon City. Quezon City: U.P. Law Center, 1975.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)University of the Philippines. Law Center. Division of Continuing Legal Education و Flerida Ruth P. Romero. Labor Relations Law in Transition: Proceedings of the Eleventh Annual Institute on Labor Relations Law, U.P. Law Center, Diliman, Quezon City. U.P. Law Center, 1975.