美國海軍陸戰隊關鍵技能幹員 Government Accountability Office. GAO Congressional report, Special Operations Forces: Opportunities Exist to Improve Transparency of Funding and Assess
S. Army SpecialForces, 1961-1971 (1989), CHM Publication 90-23, Department of the Army. http://www.history.army/milBOOKS/Vietnam/90-23/tab5.htm[永久失效連結]
of the SpecialForces. Ballantine Books. 2006. ISBN 978-0-7394-6504-2. Core, Dublin. Interview with Private Harry Perlmutter, Part I. Special Operations