APA (7th ed.) Citation

Duncano, D. A. (2010). National Internal Revenue Code of 1997 (2009 ed.). National Book Store.

Chicago Style (17th ed.) Citation

Duncano, Danilo A. National Internal Revenue Code of 1997. 2009 ed. Mandaluyong City: National Book Store, 2010.

MLA (9th ed.) Citation

Duncano, Danilo A. National Internal Revenue Code of 1997. 2009 ed. National Book Store, 2010.