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2. R. v. Bryan: The Supreme Court and the electoral process;Bredt;Supreme Court Law Review,2008
3. Chase , Steven. 2015 The Globe and Mail http://www.theglobeandmail.com/news/politics/harper-supporters-form-political-advertising-group-to-target-election-rivals/article25064778/
4. Commissioner of Canada Elections 2016 Commissioner of Canada Elections Annual Report 2015-2016 https://www.cef-cce.gc.ca/content.asp?section=rep&dir=rep4&document=index&lang=e