APA (7th ed.) Citation

Pacheco, M. (1981). Modifications in the Philippine tariff code with commodity index (1981 edition.). Directory of Philippine Industries.

Chicago Style (17th ed.) Citation

Pacheco, Mardonio. Modifications in the Philippine Tariff Code with Commodity Index. 1981 edition. Makati: Directory of Philippine Industries, 1981.

MLA (9th ed.) Citation

Pacheco, Mardonio. Modifications in the Philippine Tariff Code with Commodity Index. 1981 edition. Directory of Philippine Industries, 1981.