Marfil, M. (1999). Erap names old DOST hand science secretary. Philippine Daily Inquirer.
Cita Chicago (17th ed.)Marfil, Martin. "Erap Names Old DOST Hand Science Secretary." Philippine Daily Inquirer 1999.
Cita MLA (9th ed.)Marfil, Martin. "Erap Names Old DOST Hand Science Secretary." Philippine Daily Inquirer, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.