Katigbak, A. F. (2005). Ad valorem tax for cigarettes to generate more revenues for gov't. Philippine Star.
Cita Chicago (17th ed.)Katigbak, Antonio F. "Ad Valorem Tax for Cigarettes to Generate More Revenues for Gov't." Philippine Star 2005.
Cita MLA (9th ed.)Katigbak, Antonio F. "Ad Valorem Tax for Cigarettes to Generate More Revenues for Gov't." Philippine Star, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.