Cita APA (7th ed.)

Philippines & Gonzales, E. G. (1986). National internal revenue code. Rex Book Store.

Cita Chicago (17th ed.)

Philippines i Epifanio G. Gonzales. National Internal Revenue Code. Manila: Rex Book Store, 1986.

Cita MLA (9th ed.)

Philippines i Epifanio G. Gonzales. National Internal Revenue Code. Rex Book Store, 1986.