Philippines (Republic) Bureau of Internal Revenue, Philippines (Republic), & Superius Management and Investment Corp. (1973). Presidential issuances: Taxation and revenue rules and regulations. [s.n.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Philippines (Republic) Bureau of Internal Revenue, Philippines (Republic), و Superius Management and Investment Corp. Presidential Issuances: Taxation and Revenue Rules and Regulations. Quezon City: [s.n, 1973.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Philippines (Republic) Bureau of Internal Revenue, et al. Presidential Issuances: Taxation and Revenue Rules and Regulations. [s.n, 1973.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.