APA (7th ed.) Citation

Krafft, K., & Krafft, M. (1980). Volcanoes, earth's awakening. Hammond Inc..

Chicago Style (17th ed.) Citation

Krafft, Katia, and Maurice Krafft. Volcanoes, Earth's Awakening. Maplewood, N.J.: Hammond Inc., 1980.

MLA (9th ed.) Citation

Krafft, Katia, and Maurice Krafft. Volcanoes, Earth's Awakening. Hammond Inc., 1980.