Gravides, X., & Gumban, W. M. (2003). Five-point pitfall. Philippine Collegian.
芝加哥风格引文Gravides, Xavier, 与 Wendell Mollenido Gumban. "Five-point Pitfall." Philippine Collegian 2003.
MLA引文Gravides, Xavier, 与 Wendell Mollenido Gumban. "Five-point Pitfall." Philippine Collegian, 2003.
警告：这些引文格式不一定是100％准确.