APA (7 वां संस्करण) प्रशस्ति पत्र
Unger, M. F. (1968). The haunting of Bishop Pike: A Christian view of the other side. Tyndale House publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Unger, Merrill F. The Haunting of Bishop Pike: A Christian View of the Other Side. Wheaton: Tyndale House publishers, 1968.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Unger, Merrill F. The Haunting of Bishop Pike: A Christian View of the Other Side. Tyndale House publishers, 1968.
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