Clapper, James R., Marcel Lettre, and Michael S. Rogers. Joint Statement for the Record to the Senate Armed Services Committee ?Foreign Cyber Threats to the United States?., 2017.

Clapper, James R.. Statement for the Record Worldwide Threat Assessment of the US Intelligence Community Senate Armed Services Committee. Senate Armed Services Committee, 2016.

Clapper, James R.. Statement for the Record. Worldwide Threat Assessment of the US Intelligence Community. Office of the Director of National Intelligence, 2013.