Research in parapsychology 1989: abstracts and papers from the thirty-second annual convention of the Parapsychological Association, 1989
editors, Linda A. Henkel, John Palmer
The Scarecrow Press, Inc., 1990
 Buku Teks
Parapsychology: research on exceptional experiences
edited by Jane Henry
Routledge, 2005
 Buku Teks
Encyclopedia of occultism & parapsychology
edited by J. Gordon Melton
Gale Group, 2001
 Buku Referensi
Bentine, Michael
The door marked summer
Granada , 1981
 Buku Teks
Karolyi, George, author
An excursion into the paranormal
The Paranormal Phenomena Research Foundation, 2009
 Buku Teks
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