The San Fernando, California, earthquake of February 9, 1971:
a preliminary report published jointly by the U.S. Geological Survey and the National Oceanic and Atmospheric Administration.

APA Citation

California. Division of Mines and Geology., United States. National Oceanic and Atmospheric Administration., Geological Survey (U.S.). (1971). The San Fernando, California, earthquake of February 9, 1971: a preliminary report published jointly by the U.S. Geological Survey and the National Oceanic and Atmospheric Administration. Washington: U.S. Govt. Print. Off..

MLA Citation

California. Division of Mines and Geology, United States. National Oceanic and Atmospheric Administration, and Geological Survey (U.S.). The San Fernando, California, Earthquake of February 9, 1971: a Preliminary Report Published Jointly by the U.S. Geological Survey And the National Oceanic And Atmospheric Administration. Washington: U.S. Govt. Print. Off., 1971.