Zibas, Christine (December 2007). "CRUSADE, by Robyn Young". www.reviewingtheevidence.com. Archived from the original on 28 April 2012. Retrieved 7 November 2011.
Zibas, Christine (December 2007). "CRUSADE, by Robyn Young". www.reviewingtheevidence.com. Archived from the original on 28 April 2012. Retrieved 7 November 2011.