Lee-Brago, P. (2022). Cigarette butts account for 766 M kilos of trash. Philippine Star.
芝加哥风格引文Lee-Brago, Pia. "Cigarette Butts Account for 766 M Kilos of Trash." Philippine Star 2022.
MLA引文Lee-Brago, Pia. "Cigarette Butts Account for 766 M Kilos of Trash." Philippine Star, 2022.
警告：这些引文格式不一定是100％准确.