Brown, Harold (1983) Thinking about national security: defense and foreign policy in a dangerous world. As quoted in Watson, Cynthia Ann (2008). 《U.S. national security: a reference handbook》. Contemporary world issues 2 (revis)판. ABC-CLIO. 281쪽. ISBN978-1-59884-041-4. 2010년 9월 24일에 확인함.