APA (7th ed.) Citation

Luzentales, B., & Villanueva, M. C. R. (1999). Volatile volcanoes. Philippine Graphic.

Chicago Style (17th ed.) Citation

Luzentales, Benny, and Ma. Christina R. Villanueva. "Volatile Volcanoes." Philippine Graphic 1999.

MLA (9th ed.) Citation

Luzentales, Benny, and Ma. Christina R. Villanueva. "Volatile Volcanoes." Philippine Graphic, 1999.

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