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