ISBN 1-85367-480-X==External links==* Internet archive of transportation and firing images* Internet archive copy of panzerlexikon.de video of Dora loading and firing* Internet archive copy of panzerlexikon.de video of Dora* Website with additional information
* http://www.hpwt.de/2Weltkrieg/Dorae.htm* http://html2.free.fr/canons/dora.htm* German Artillery of World War Two, Ian V. Hogg.