APA (7th ed.) Citation

Career Development Center (Quezon City, Philippines), & Philippines. Bureau of Internal Revenue. (1990). Complete 1989 numbered B.I.R. rulings. Career Development Center.

Chicago Style (17th ed.) Citation

Career Development Center (Quezon City, Philippines), and Philippines. Bureau of Internal Revenue. Complete 1989 Numbered B.I.R. Rulings. Quezon City: Career Development Center, 1990.

MLA (9th ed.) Citation

Career Development Center (Quezon City, Philippines), and Philippines. Bureau of Internal Revenue. Complete 1989 Numbered B.I.R. Rulings. Career Development Center, 1990.