Philippines. Laws, statutes, etc, & De Leon, H. S. (1975). The national internal revenue code annotated: As amended up to Pres. Decree No. 820. National Book Store.
Chicagoスタイル(17版)引用形式Philippines. Laws, statutes, etc, , Hector S. De Leon. The National Internal Revenue Code Annotated: As Amended Up to Pres. Decree No. 820. Manila: National Book Store, 1975.
MLA(9版)引用形式Philippines. Laws, statutes, etc, , Hector S. De Leon. The National Internal Revenue Code Annotated: As Amended Up to Pres. Decree No. 820. National Book Store, 1975.
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