Citazione Stile APA (7a Edizione)

De Leon, H. S. (1983). The national internal revenue code: Annotated. Rex.

Citazione stile Chigago Style (17a edizione)

De Leon, Hector S. The National Internal Revenue Code: Annotated. Manila: Rex, 1983.

Citatione MLA (9a ed.)

De Leon, Hector S. The National Internal Revenue Code: Annotated. Rex, 1983.