APA (7th ed.) Citation

Catindig, T. A. (1998). The national internal revenue code of 1997 [effective January 1, 1998]. Catindig Tiongco & Nibungco.

Chicago Style (17th ed.) Citation

Catindig, Tristan A. The National Internal Revenue Code of 1997 [effective January 1, 1998]. Pasig City: Catindig Tiongco & Nibungco, 1998.

MLA (9th ed.) Citation

Catindig, Tristan A. The National Internal Revenue Code of 1997 [effective January 1, 1998]. Catindig Tiongco & Nibungco, 1998.