Lee-Brago, P. (2022). Cigarette butts account for 766 M kilos of trash. Philippine Star.
Cita Chicago (17th ed.)Lee-Brago, Pia. "Cigarette Butts Account for 766 M Kilos of Trash." Philippine Star 2022.
Cita MLA (9th ed.)Lee-Brago, Pia. "Cigarette Butts Account for 766 M Kilos of Trash." Philippine Star, 2022.
Atenció: Aquestes cites poden no estar 100% correctes.