APA (7th ed.) Citation

Pinca, R. M. (1990). Air pollution harmful to man but may increase crop yield. Philippine Star.

Chicago Style (17th ed.) Citation

Pinca, Ric M. "Air Pollution Harmful to Man but May Increase Crop Yield." Philippine Star 1990.

MLA (9th ed.) Citation

Pinca, Ric M. "Air Pollution Harmful to Man but May Increase Crop Yield." Philippine Star, 1990.

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