Cita APA (7th ed.)

Philippines. National Tax Research Center. (1977). The National Tax Research Center. NTRC.

Cita Chicago (17th ed.)

Philippines. National Tax Research Center. The National Tax Research Center. Manila: NTRC, 1977.

Cita MLA (9th ed.)

Philippines. National Tax Research Center. The National Tax Research Center. NTRC, 1977.