Sicam, E. L. (1999). Travel time is still going strong after 13 years. Philippine Daily Inquirer.
Cita Chicago (17th ed.)Sicam, Edmund L. "Travel Time Is Still Going Strong After 13 Years." Philippine Daily Inquirer 1999.
Cita MLA (9th ed.)Sicam, Edmund L. "Travel Time Is Still Going Strong After 13 Years." Philippine Daily Inquirer, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.