‘CRUMP, Norman Easedale’, Who Was Who, A & C Black, an imprint of Bloomsbury Publishing plc, 1920–2007; online edn, Oxford University Press, Dec 2007 accessed 22 April 2014
‘CRUMP, Norman Easedale’, Who Was Who, A & C Black, an imprint of Bloomsbury Publishing plc, 1920–2007; online edn, Oxford University Press, Dec 2007 accessed 22 April 2014
‘CRUMP, Norman Easedale’, Who Was Who, A & C Black, an imprint of Bloomsbury Publishing plc, 1920–2007; online edn, Oxford University Press, Dec 2007 accessed 22 April 2014
