Gravides, X., & Gumban, W. M. (2003). Five-point pitfall. Philippine Collegian.
Lua i Stíl Chicago (17ú heag.)Gravides, Xavier, agus Wendell Mollenido Gumban. "Five-point Pitfall." Philippine Collegian 2003.
Lua MLA (9ú heag.)Gravides, Xavier, agus Wendell Mollenido Gumban. "Five-point Pitfall." Philippine Collegian, 2003.
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