APA (7th ed.) Citation

Philippines. Bureau of Internal Revenue. (1990). Complete 1989 numbered B.I.R. rulings. The Center.

Chicago Style (17th ed.) Citation

Philippines. Bureau of Internal Revenue. Complete 1989 Numbered B.I.R. Rulings. Quezon City: The Center, 1990.

MLA (9th ed.) Citation

Philippines. Bureau of Internal Revenue. Complete 1989 Numbered B.I.R. Rulings. The Center, 1990.

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