APA (7th ed.) Citation

Cañón-Tapia, E. (2010). What is a volcano? Geological Society of America.

Chicago Style (17th ed.) Citation

Cañón-Tapia, Edgardo. What Is a Volcano? Boulder, Colo: Geological Society of America, 2010.

MLA (9th ed.) Citation

Cañón-Tapia, Edgardo. What Is a Volcano? Geological Society of America, 2010.

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