Philippines. Bureau of Internal Revenue & Philippines. Laws, statutes, etc. (1977). National internal revenue code of 1977. Govt. Print. Off.
Chicago Style (17th ed.) CitationPhilippines. Bureau of Internal Revenue and statutes Philippines. Laws. National Internal Revenue Code of 1977. Manila: Govt. Print. Off, 1977.
MLA (9th ed.) CitationPhilippines. Bureau of Internal Revenue and statutes Philippines. Laws. National Internal Revenue Code of 1977. Govt. Print. Off, 1977.
Warning: These citations may not always be 100% accurate.