APA (7th ed.) Citation

Casayuran, M. B. (2019). 9 out of 10 people worldwide breathe polluted air -WHO. Manila Bulletin.

Chicago Style (17th ed.) Citation

Casayuran, Mario B. "9 Out of 10 People Worldwide Breathe Polluted Air -WHO." Manila Bulletin 2019.

MLA (9th ed.) Citation

Casayuran, Mario B. "9 Out of 10 People Worldwide Breathe Polluted Air -WHO." Manila Bulletin, 2019.

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