Trích dẫn Doppelgänger

  • Brugger, P; Regard, M; Landis, T. (1996). Unilaterally Felt ‘‘Presences’’: The Neuropsychiatry of One’s Invisible Doppelgänger. Neuropsychiatry, Neuropsychology, and Behavioral Neurology 9: 114-122.
  • Keppler, C. F. (1972). The Literature of the Second Self. University of Arizona Press.
  • Maack, L. H; Mullen, P. E. (1983). The Doppelgänger, Disintegration and Death: A Case Report. Psychological Medicine 13: 651-654.
  • Miller, K. (1985). Doubles: Studies in Literary History. Oxford University Press.
  • Rank, O. (1971, originally published in German, Der Doppelgänger, 1914). The Double: A Psychoanalytic Study. The University of North Carolina Press.
  • Reed, G. F. (1987). Doppelgänger. In Gregory R. L. The Oxford Companion to the Mind. Oxford University Press. pp. 200–201.
  • Todd, J; Dewhurst, K. (1962). The Significance of the Doppelgänger (Hallucinatory Double) in Folklore and Neuropsychiatry. Practitioner 188: 377-382.
  • Todd, J; Dewhurst, K. (1955). The Double: Its Psycho-Pathology and Psycho-Physiology. Journal of Nervous and Mental Disease 122: 47-55.