Theodor Adorno, tr. Rodney Livingstone, , London, 2005 Peter Burbidge and Richard Sutton, , London, 1979. Robert Donington, , London, 1979 William Drabkin, "Motif", i , London 1995, vol. 12 Donald Jay Grout and Hermine Weigel Williams (2003). (4th ed.). New York: Columbia University Press. H. Rosenthal and J. Warrack (eds.), , Oxford: Oxford University Press, 1979 Michael Kennedy, , Oxford: Oxford University Press, 1987. . Barry Millington (ed.), , London, Thames & Hudson, 2001 Alexander Rehding, review of Christian Thorau, "Semantisierte Sinnlichkeit: Studien zu Rezeption und Zeichenstruktur der Leitmotivtechnik Richard Wagners" in vol. 23 (Oxford, 2007) s. 348–351 Christian Thorau, "Guides for Wagnerites: Leitmotifs and Wagnerian Listening", in T. Grey, (ed.), , (s. 133–150) Princeton: Princeton University Press, 2009 Cosima Wagner, tr. Geoffrey Skelton, (2 vols.), London, 1980. John Warrack, "Leitmotif", i , London 1995, vol. 10 John D. White, , 1976. Arnold Whittall, "Leitmotif", , second edition, edited by Stanley Sadie and John Tyrrell, London: Macmillan Publishers, 2001. Doug Adams, "The Music of the Lord of the Rings Films", Carpentier, 2010,