Catindig, T. A. (1998). The national internal revenue code of 1997 [effective January 1, 1998]. Catindig Tiongco & Nibungco.
芝加哥风格引文Catindig, Tristan A. The National Internal Revenue Code of 1997 [effective January 1, 1998]. Pasig City: Catindig Tiongco & Nibungco, 1998.
MLA引文Catindig, Tristan A. The National Internal Revenue Code of 1997 [effective January 1, 1998]. Catindig Tiongco & Nibungco, 1998.
警告：这些引文格式不一定是100％准确.