Midland Publishing, 2009 ISBN 1-85780-307-8 Gunston, Bill. The Osprey Encyclopaedia of Russian Aircraft 1875–1995. London, Osprey, 1995 ISBN 1-85532-405-9
किलाबन्दी Gravett, Christopher (1990), Medieval Siege Warfare, Oxford: Osprey Publishing, ISBN 0-85045-947-8 Johnson, Matthew (2002), Behind the Castle