Payumo, F. C. (2006). Flaws in Sigawss Pirma petition. Philippine Daily Inquirer.
Cita Chicago (17th ed.)Payumo, Felicito C. "Flaws in Sigawss Pirma Petition." Philippine Daily Inquirer 2006.
Cita MLA (9th ed.)Payumo, Felicito C. "Flaws in Sigawss Pirma Petition." Philippine Daily Inquirer, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.