توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Institute on Tax Law (15th : U.P. Law Center : 1979) & Festin, B. B. (1982). Aspects of Philippine tax law: Proceedings of the Fifteenth Annual Institute on Tax Law - 1979. U.P. Law Center, Division of Continuing Legal Education.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Institute on Tax Law (15th : U.P. Law Center : 1979) و Benjamin B. Festin. Aspects of Philippine Tax Law: Proceedings of the Fifteenth Annual Institute on Tax Law - 1979. Quezon City: U.P. Law Center, Division of Continuing Legal Education, 1982.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Institute on Tax Law (15th : U.P. Law Center : 1979) و Benjamin B. Festin. Aspects of Philippine Tax Law: Proceedings of the Fifteenth Annual Institute on Tax Law - 1979. U.P. Law Center, Division of Continuing Legal Education, 1982.