Irwin, H. J. (2009). The psychology of paranormal belief: A researcher's handbook. University Of Hertfordshire Press.
Lua i Stíl Chicago (17ú heag.)Irwin, H. J. The Psychology of Paranormal Belief: A Researcher's Handbook. Hertfordshire, England: University Of Hertfordshire Press, 2009.
Lua MLA (9ú heag.)Irwin, H. J. The Psychology of Paranormal Belief: A Researcher's Handbook. University Of Hertfordshire Press, 2009.
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