APA

United States, . (2018). Strategy for protecting and preparing the homeland against threats of electromagnetic pulse and geomagnetic disturbances. [Washington, D.C.]: U.S. Department of Homeland Security.

Chicago

United States, . 2018. Strategy for protecting and preparing the homeland against threats of electromagnetic pulse and geomagnetic disturbances. [Washington, D.C.]: U.S. Department of Homeland Security.

Harvard

United States, . (2018). Strategy for protecting and preparing the homeland against threats of electromagnetic pulse and geomagnetic disturbances. [Washington, D.C.]: U.S. Department of Homeland Security.

MLA

United States, . Strategy for protecting and preparing the homeland against threats of electromagnetic pulse and geomagnetic disturbances. [Washington, D.C.]: U.S. Department of Homeland Security. 2018.