APA (7th ed.) Citation

Perez, T. (1997). Ozone revisited. Philippine Star.

Chicago Style (17th ed.) Citation

Perez, Tony. "Ozone Revisited." Philippine Star 1997.

MLA (9th ed.) Citation

Perez, Tony. "Ozone Revisited." Philippine Star, 1997.

Warning: These citations may not always be 100% accurate.