Ruiz, E. (2018). PH pledges conservation of forests. Manila Bulletin.
芝加哥风格引文Ruiz, Ellalyn. "PH Pledges Conservation of Forests." Manila Bulletin 2018.
MLA引文Ruiz, Ellalyn. "PH Pledges Conservation of Forests." Manila Bulletin, 2018.
警告：这些引文格式不一定是100％准确.