APA (7th ed.) Citation

Hudtohan, E. T. (2012). Clean air and negative ions. IN Green light [column]. Manila Standard Today.

Chicago Style (17th ed.) Citation

Hudtohan, Emiliano T. "Clean Air and Negative Ions. IN Green Light [column]." Manila Standard Today 2012.

MLA (9th ed.) Citation

Hudtohan, Emiliano T. "Clean Air and Negative Ions. IN Green Light [column]." Manila Standard Today, 2012.

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