Javellana, J. L. (1999). Estrada, Ople, Villar to sign covenant Congress won't push political changes. Philippine Daily Inquirer.
Chicago Style (17. basım) AtıfJavellana, Juliet Labog. "Estrada, Ople, Villar to Sign Covenant Congress Won't Push Political Changes." Philippine Daily Inquirer 1999.
MLA (9th ed.) AtıfJavellana, Juliet Labog. "Estrada, Ople, Villar to Sign Covenant Congress Won't Push Political Changes." Philippine Daily Inquirer, 1999.
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