APA (7th ed.) Citation

Porcalla, D. (1997). De Villa submitted resignation July 20. Philippine Star.

Chicago Style (17th ed.) Citation

Porcalla, Delon. "De Villa Submitted Resignation July 20." Philippine Star 1997.

MLA (9th ed.) Citation

Porcalla, Delon. "De Villa Submitted Resignation July 20." Philippine Star, 1997.

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