Sicam, E. L. (1999). Travel time is still going strong after 13 years. Philippine Daily Inquirer.
Chicago Style (17. basım) AtıfSicam, Edmund L. "Travel Time Is Still Going Strong After 13 Years." Philippine Daily Inquirer 1999.
MLA (9th ed.) AtıfSicam, Edmund L. "Travel Time Is Still Going Strong After 13 Years." Philippine Daily Inquirer, 1999.
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