APA (7th ed.) Citation

PHILVOCS observer. Philippine Institute of Volcanology and Seismology.

Chicago Style (17th ed.) Citation

PHILVOCS Observer. [S.l.]: Philippine Institute of Volcanology and Seismology.

MLA (9th ed.) Citation

PHILVOCS Observer. Philippine Institute of Volcanology and Seismology.

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