APA (7th ed.) Citation

National Geophysical Data Center. (1989). Earthquakes in California. [National Geophysical Data Center].

Chicago Style (17th ed.) Citation

National Geophysical Data Center. Earthquakes in California. [Boulder, CO]: [National Geophysical Data Center], 1989.

MLA (8th ed.) Citation

National Geophysical Data Center. Earthquakes in California. [National Geophysical Data Center], 1989.

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