United States. Geological Survey, National Oceanic and Atmospheric Administration, & California. Division of Mines and Geology. (1971). The San Fernando, California, earthquake of February 9, 1971: A preliminary report. United States Government Printing Office.
Chicago Style (17th ed.) CitationUnited States. Geological Survey, National Oceanic and Atmospheric Administration, and California. Division of Mines and Geology. The San Fernando, California, Earthquake of February 9, 1971: A Preliminary Report. Washington: United States Government Printing Office, 1971.
MLA (9th ed.) CitationUnited States. Geological Survey, et al. The San Fernando, California, Earthquake of February 9, 1971: A Preliminary Report. United States Government Printing Office, 1971.
Warning: These citations may not always be 100% accurate.