APA (7th ed.) Zitazioa
Gruss, E. C. (1994). The Ouija board: A doorway to the occult. P&R Pub..
Chicago Style (17th ed.) Zitazioa
Gruss, Edmond C. The Ouija Board: A Doorway to the Occult. Phillipsburg, N.J.: P&R Pub., 1994.
MLA (9th ed.) Zitazioa
Gruss, Edmond C. The Ouija Board: A Doorway to the Occult. P&R Pub., 1994.
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