APA (7th ed.) Citation

(1971). San Fernando earthquake, 9 February 1971: [preliminary seismological reports]. California Institute of Technology.

Chicago Style (17th ed.) Citation

San Fernando Earthquake, 9 February 1971: [preliminary Seismological Reports]. Pasadena, Calif: California Institute of Technology, 1971.

MLA (9th ed.) Citation

San Fernando Earthquake, 9 February 1971: [preliminary Seismological Reports]. California Institute of Technology, 1971.