APA (7th ed.) Citation

Philippines. (1973). National internal revenue code as amended up to Pres. Decree no. 69 (5th ed.). Central Book Supply.

Chicago Style (17th ed.) Citation

Philippines. National Internal Revenue Code as Amended Up to Pres. Decree No. 69. 5th ed. Manila: Central Book Supply, 1973.

MLA (9th ed.) Citation

Philippines. National Internal Revenue Code as Amended Up to Pres. Decree No. 69. 5th ed. Central Book Supply, 1973.