National Geophysical Data Center / World Data Service (NGDC/WDS) (1972), Significant Earthquake Database, National Geophysical Data Center, National Oceanic and Atmospheric Administration, doi:10.7289/V5TD9V7K
National Geophysical Data Center / World Data Service (NGDC/WDS) (1972), Significant Earthquake Database, National Geophysical Data Center, National Oceanic and Atmospheric Administration, doi:10.7289/V5TD9V7K