"Strengthening our Security by Adhering to our Values and Laws". John O. Brennan's Speech at Harvard Law School in Cambridge, Massachusetts, obamawhitehouse.archives.gov. September 16, 2011.
William Falconer (1784). “An Universal Dictionary of the Marine: Or, A Copious Explanation of the Technical Terms and Phrases Employed in the Construction, Equipment, Furniture, Machinery, Movements, and Military Operations of a Ship”, p.201