Philippines. Bureau of Internal Revenue & Career Development Center (Quezon City, Philippines). (1991). Complete 1990 numbered B.I.R. rulings. The Center.
Chicago Style (17th ed.) CitationPhilippines. Bureau of Internal Revenue and Philippines) Career Development Center (Quezon City. Complete 1990 Numbered B.I.R. Rulings. Quezon City: The Center, 1991.
MLA (9th ed.) CitationPhilippines. Bureau of Internal Revenue and Philippines) Career Development Center (Quezon City. Complete 1990 Numbered B.I.R. Rulings. The Center, 1991.
Warning: These citations may not always be 100% accurate.