APA (7th ed.) Citation

Geological Survey (U.S.) & National Earthquake Information Center. Earthquake information bulletin. The Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and National Earthquake Information Center. Earthquake Information Bulletin. Reston, Va.: The Geological Survey.

MLA (9th ed.) Citation

Geological Survey (U.S.) and National Earthquake Information Center. Earthquake Information Bulletin. The Geological Survey.

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