APA

Dart R. L., United States, . (1980). Puerto Rico seismic network data report of earthquakes located by the programs HYPO71 and HYPOELLIPSE, July 1, 1975-December 31, 1977. Arlington, Va. (1200 South Eads Street, Arlington, Va. 22202: Free on Application to Branch of Distribution, U.S. Geological Survey.

Chicago

Dart R L, United States, . 1980. Puerto Rico seismic network data report of earthquakes located by the programs HYPO71 and HYPOELLIPSE, July 1, 1975-December 31, 1977. Arlington, Va. (1200 South Eads Street, Arlington, Va. 22202: Free on Application to Branch of Distribution, U.S. Geological Survey.

Harvard

Dart R. L., United States, . (1980). Puerto Rico seismic network data report of earthquakes located by the programs HYPO71 and HYPOELLIPSE, July 1, 1975-December 31, 1977. Arlington, Va. (1200 South Eads Street, Arlington, Va. 22202: Free on Application to Branch of Distribution, U.S. Geological Survey.

MLA

Dart R L, United States, . Puerto Rico seismic network data report of earthquakes located by the programs HYPO71 and HYPOELLIPSE, July 1, 1975-December 31, 1977. Arlington, Va. (1200 South Eads Street, Arlington, Va. 22202: Free on Application to Branch of Distribution, U.S. Geological Survey. 1980.