Cita APA (7th ed.)

Philippines, Nolledo, M., & Nolledo, J. N. (1991). The national internal revenue code of the Philippines (15th and rev. ed.). National Book Store.

Cita Chicago (17th ed.)

Philippines, Mercedita-Santiago Nolledo, i Jose N. Nolledo. The National Internal Revenue Code of the Philippines. 15th and rev. ed. Metro Manila: National Book Store, 1991.

Cita MLA (9th ed.)

Philippines, et al. The National Internal Revenue Code of the Philippines. 15th and rev. ed. National Book Store, 1991.