Lee-Brago, P. (2021). Lockdowns cut Southeast Asia air particulate by 40%. Philippine Star.
Cita Chicago (17th ed.)Lee-Brago, Pia. "Lockdowns Cut Southeast Asia Air Particulate by 40%." Philippine Star 2021.
Cita MLA (9th ed.)Lee-Brago, Pia. "Lockdowns Cut Southeast Asia Air Particulate by 40%." Philippine Star, 2021.
Atenció: Aquestes cites poden no estar 100% correctes.