Casayuran, M. B. (1997). Probe sought on series of plane crashes. Manila Bulletin.
芝加哥风格引文Casayuran, Mario B. "Probe Sought on Series of Plane Crashes." Manila Bulletin 1997.
MLA引文Casayuran, Mario B. "Probe Sought on Series of Plane Crashes." Manila Bulletin, 1997.
警告：这些引文格式不一定是100％准确.