1. Amarasingam, Amarnath. “What Twitter Really Means for Islamic State Supporters.” War on the Rocks, December 30, 2015. https://warontherocks.com/2015/12/what-twitter-really-means-for-islamic-state-supporters/.
2. Armstrong, Rebecca. “Jihad: Play the Game.” The Independent, August 17, 2005. https://www.independent.co.uk/news/science/jihad-play-the-game-5347294.html.