Cita APA (7th ed.)

Gruss, E. C. (1994). The ouija board: A doorway to the occult (ed.). P & R publishers.

Cita Chicago (17th ed.)

Gruss, Edmond C. The Ouija Board: A Doorway to the Occult. ed. New Jersey: P & R publishers, 1994.

Cita MLA (9th ed.)

Gruss, Edmond C. The Ouija Board: A Doorway to the Occult. ed. P & R publishers, 1994.