Contreras, V. (1999). Study finds up biased against poor. Philippine Daily Inquirer.
Chicago-viite (17. p.)Contreras, Voltaire. "Study Finds Up Biased Against Poor." Philippine Daily Inquirer 1999.
MLA-viite (9. p.)Contreras, Voltaire. "Study Finds Up Biased Against Poor." Philippine Daily Inquirer, 1999.
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