Philippines. Bureau of Internal Revenue. (1981). Income tax primer for individuals (Rev. ed.). BIR National Office.
Chicago Style (17th ed.) CitationPhilippines. Bureau of Internal Revenue. Income Tax Primer for Individuals. Rev. ed. Quezon City: BIR National Office, 1981.
MLA (9th ed.) CitationPhilippines. Bureau of Internal Revenue. Income Tax Primer for Individuals. Rev. ed. BIR National Office, 1981.
Warning: These citations may not always be 100% accurate.