APA (7th ed.) Citation

Philippines. Bureau of Customs & Philippine Research Guide. Revision orders. PRG.

Chicago Style (17th ed.) Citation

Philippines. Bureau of Customs and Philippine Research Guide. Revision Orders. Quezon City: PRG.

MLA (9th ed.) Citation

Philippines. Bureau of Customs and Philippine Research Guide. Revision Orders. PRG.

Warning: These citations may not always be 100% accurate.