APA (7th ed.) Citation

Directory of world seismograph stations. World Data Center A, Nat. Acad. of Sciences.

Chicago Style (17th ed.) Citation

Directory of World Seismograph Stations. Washington, DC: World Data Center A, Nat. Acad. of Sciences.

MLA (9th ed.) Citation

Directory of World Seismograph Stations. World Data Center A, Nat. Acad. of Sciences.

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