APA (7th ed.) Citation

Vilhjalmsson, T. (1997). Iceland's hidden fire. Dec. 1997.

Chicago Style (17th ed.) Citation

Vilhjalmsson, Thor. Iceland's Hidden Fire. Dec. 1997, 1997.

MLA (9th ed.) Citation

Vilhjalmsson, Thor. Iceland's Hidden Fire. Dec. 1997, 1997.

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