APA (7th ed.) Citation

Philippines. (1982). National internal revenue code of 1977 as amended up to December 31, 1981 (Rev. ed.). NEDA-APO Production Unit.

Chicago Style (17th ed.) Citation

Philippines. National Internal Revenue Code of 1977 as Amended Up to December 31, 1981. Rev. ed. [Quezon City]: NEDA-APO Production Unit, 1982.

MLA (9th ed.) Citation

Philippines. National Internal Revenue Code of 1977 as Amended Up to December 31, 1981. Rev. ed. NEDA-APO Production Unit, 1982.