1. Ackroyd, Peter, The English Ghost: Spectres Through Time (London, Chatto and Windus, 2010).
2. Adams, Paul, Written in Blood: A Cultural History of the British Vampire (The Mill, Stroud, The History Press, 2014).
3. Anstruther, Ian, The Knight and the Umbrella: An Account of the Eglinton Tournament, 1839 (London, Geoffrey Bles, London, 1963).
4. Bloom, Clive, Victoria’s Madmen: Revolution and Alienation (Basingstoke, Palgrave Macmillan, 2013).
5. Cardinal, Roger, German Romantics in Context (Littlehampton, Littlehampton Book Services Limited, 1975).