De Guzman, R. (1998). PAL pilot's strike strands thousands. Manila Bulletin.
芝加哥风格引文De Guzman, Ronniel. "PAL Pilot's Strike Strands Thousands." Manila Bulletin 1998.
MLA引文De Guzman, Ronniel. "PAL Pilot's Strike Strands Thousands." Manila Bulletin, 1998.
警告：这些引文格式不一定是100％准确.