Fortuna, J. (1994). Abu Sayyaf a full-blown problem. IN East and West [column]. Manila Chronicle.
芝加哥风格引文Fortuna, Julius. "Abu Sayyaf a Full-blown Problem. IN East and West [column]." Manila Chronicle 1994.
MLA引文Fortuna, Julius. "Abu Sayyaf a Full-blown Problem. IN East and West [column]." Manila Chronicle, 1994.
警告：这些引文格式不一定是100％准确.