APA (7th ed.) Citation

De Leon, H. S. (1998). The national internal revenue code annotated: P.D. No. 1158, as amended up to R.A. No. 8424 (6th ed.). Rex Book Store.

Chicago Style (17th ed.) Citation

De Leon, Hector S. The National Internal Revenue Code Annotated: P.D. No. 1158, as Amended Up to R.A. No. 8424. 6th ed. Manila: Rex Book Store, 1998.

MLA (9th ed.) Citation

De Leon, Hector S. The National Internal Revenue Code Annotated: P.D. No. 1158, as Amended Up to R.A. No. 8424. 6th ed. Rex Book Store, 1998.