(1999). Environmental management: How far than the road are you. Philippine Daily Inquirer.
Chicago Style aipamena"Environmental Management: How Far than the Road Are You." Philippine Daily Inquirer 1999.
MLA aipamena"Environmental Management: How Far than the Road Are You." Philippine Daily Inquirer, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.