„Operation IMPACT“. National Defence and the Canadian Armed Forces. 19 August 2014. Suarchyvuotas originalas 2018-10-21. Nuoroda tikrinta 6 March 2018.
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Fairfield, Hannah; Wallace, Tim; Watkins, Derek (21 May 2015). „How ISIS Expands“. The New York Times. Suarchyvuota iš originalo 23 May 2015. Nuoroda tikrinta 15 September 2020.
„Operation IMPACT“. National Defence and the Canadian Armed Forces. 19 August 2014. Suarchyvuotas originalas 2018-10-21. Nuoroda tikrinta 6 March 2018.