Johnson, C.(2009). Trading Auntie: The exploitation and protection of intellectual property rights during the BBC's monopoly years. New Review of Film and Television Studies, 7(4), 441-458. doi:10.1080/17400300903307019

Johnson, Catherine. "Trading Auntie: The Exploitation and Protection of Intellectual Property Rights During the BBC's Monopoly Years". New Review of Film and Television Studies, 7.4 ( 2009 ): 441-458.