APA aipamena

Luz, G. (1998). Setting up a clean-air certificate program. Manila Times.

Chicago Style aipamena

Luz, Guillermo. "Setting Up a Clean-air Certificate Program." Manila Times 1998.

MLA aipamena

Luz, Guillermo. "Setting Up a Clean-air Certificate Program." Manila Times, 1998.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.