APA (7th ed.) Citation

Calso, F. (1999). Cop killed, traffic officer hurt in duel. Philippine Star.

Chicago Style (17th ed.) Citation

Calso, Francis. "Cop Killed, Traffic Officer Hurt in Duel." Philippine Star 1999.

MLA (9th ed.) Citation

Calso, Francis. "Cop Killed, Traffic Officer Hurt in Duel." Philippine Star, 1999.

Warning: These citations may not always be 100% accurate.