Philippines. (1988). Tariff and customs code of the Philippines. Philippine Tariff Commission.
Cita Chicago (17th ed.)Philippines. Tariff and Customs Code of the Philippines. Quezon City: Philippine Tariff Commission, 1988.
Cita MLA (9th ed.)Philippines. Tariff and Customs Code of the Philippines. Philippine Tariff Commission, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.