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EDWARDS, Ted (1997) X-Files Confidential: ‪The Unauthorized X-Philes Compendium. Little Brown & Company.

GENGE, Ngaire (1995) The unofficial X-files companion: ‪an X-phile's guide to the mysteries, conspiracies, and really strange truths behind the show. Crown Trade Paperbacks.

GRADNITZER, L., PITTSON, T. (1999) X Marks the Spot: ‪On Location with the X-Files. ‪Arsenal Pulp Press.

GOLDMAN, Jane (1996) The X-files book of the unexplained. HarperPrism.

HATFIELD, J., BURT, G. (1996) The Unauthorized X-Files Challenge: ‪Everything You Ever Wanted to Know About Tv's Most Incredible Show. Kensington Books.

HURWITZ, M., CARTER, C. (2009) The Complete X-Files: ‪Behind the Series, the Myths, and the Movies. Insight Editions LLC.

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