Turnley, Jessica Glicken; Stewart, Dona J.; Rubright, Rich; Quirin, Jason (June 2014). Special Operations Forces Mixed-Gender Elite Teams(PDF). William Knarr (Project Leader). MacDill Air Force Base, Florida: Joint Special Operations University (JSOU) Press. pp. 11, 85–86. Archived from the original(PDF) on September 25, 2020. Retrieved 3 February 2021.
Alexander, John B (July 2010). "4: Comparison between SOF and Law Enforcement Agencies". Convergence: Special Operations Forces and Civilian Law Enforcement (Report). JSOU report 10-6. MacDill Air Force Base, Florida: Joint Special Operations University (JSOU) Press. pp. 48–62. Retrieved 29 August 2021.
North Atlantic Treaty Organization (18 December 2020). NATO Glossary of Terms and Definitions(PDF) (in English and French). Vol. AAP-06 (2020 ed.). Brussels: NATO Standardization Agency. p. 119. Archived from the original(PDF) on 2 June 2021.
North Atlantic Treaty Organization (18 December 2020). NATO Glossary of Terms and Definitions(PDF) (in English and French). Vol. AAP-06 (2020 ed.). Brussels: NATO Standardization Agency. p. 119. Archived from the original(PDF) on 2 June 2021.
Turnley, Jessica Glicken; Stewart, Dona J.; Rubright, Rich; Quirin, Jason (June 2014). Special Operations Forces Mixed-Gender Elite Teams(PDF). William Knarr (Project Leader). MacDill Air Force Base, Florida: Joint Special Operations University (JSOU) Press. pp. 11, 85–86. Archived from the original(PDF) on September 25, 2020. Retrieved 3 February 2021.