APA (7th ed.) Citation

Ritchie, D. (1988). Superquake!: Why earthquakes occur and when the big one will hit southern California. Crown.

Chicago Style (17th ed.) Citation

Ritchie, David. Superquake!: Why Earthquakes Occur and When the Big One Will Hit Southern California. New York: Crown, 1988.

MLA (9th ed.) Citation

Ritchie, David. Superquake!: Why Earthquakes Occur and When the Big One Will Hit Southern California. Crown, 1988.