APA (7th ed.) Citation

(1988). Mysteries of the unknown: Spirit summonings. Time-Life Books.

Chicago Style (17th ed.) Citation

Mysteries of the Unknown: Spirit Summonings. Virginia: Time-Life Books, 1988.

MLA (9th ed.) Citation

Mysteries of the Unknown: Spirit Summonings. Time-Life Books, 1988.

Warning: These citations may not always be 100% accurate.