Olchondra, R. T. IESTAR: Simple but remarkable tool for students, teachers. IN News. Philippine Daily Inquirer.
Čikaški stil citiranja (17. izdanje)Olchondra, Riza T. "IESTAR: Simple but Remarkable Tool for Students, Teachers. IN News." Philippine Daily Inquirer .
MLA način citiranja (9. izdanje)Olchondra, Riza T. "IESTAR: Simple but Remarkable Tool for Students, Teachers. IN News." Philippine Daily Inquirer, .
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