A T Gaydon, R B Pugh (Editors), M J Angold, G C Baugh, Marjorie M Chibnall, D C Cox, Revd D T W Price, Margaret Tomlinson, B S Trinder (1973). "Houses of Benedictine Monks – Abbey of Shrewsbury". A History of the County of Shropshire: Volume 2. pp. 30–37. {{cite web}}: |author= has generic name (help)CS1 maint: multiple names: authors list (link)
fantasticfiction.co.uk
"The Devil's Novice". FantasticFiction. 1983. Retrieved 20 April 2013. ISBN is 978-0-333-35170-3