" 1992 ISBN 0-06-092350-4* Hill, Joe, "Heart-Shaped Box"* Murch, R., "A Brief History of the Ouija Board", "Fortean Times", No.249, (June 2009), pp.
" 1992 ISBN 0-06-092350-4* Hill, Joe, "Heart-Shaped Box"* Murch, R., «A Brief History of the Ouija Board», "Fortean Times", No.249, (June 2009), pp.