APA (7th ed.) Citation

Pena, R. E. Petrology and geochemistry of the Balungao Group of volcanic centers, Pangasinan-Nueva Ecija, Luzon.

Chicago Style (17th ed.) Citation

Pena, Rolando E. Petrology and Geochemistry of the Balungao Group of Volcanic Centers, Pangasinan-Nueva Ecija, Luzon.

MLA (9th ed.) Citation

Pena, Rolando E. Petrology and Geochemistry of the Balungao Group of Volcanic Centers, Pangasinan-Nueva Ecija, Luzon.

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