Calleja, N. P. Plastic ban takes effect in Makati. Philippine daily inquirer.
Cita Chicago (17th ed.)Calleja, Niña P. "Plastic Ban Takes Effect in Makati." Philippine Daily Inquirer .
Cita MLA (9th ed.)Calleja, Niña P. "Plastic Ban Takes Effect in Makati." Philippine Daily Inquirer, .
Atenció: Aquestes cites poden no estar 100% correctes.