APA (7th ed.) Citation

(1990). Mysteries of the Unknown: V. 6. Spirit Summonings. Time-Life Books.

Chicago Style (17th ed.) Citation

Mysteries of the Unknown: V. 6. Spirit Summonings. Time-Life Books, 1990.

MLA (8th ed.) Citation

Mysteries of the Unknown: V. 6. Spirit Summonings. Time-Life Books, 1990.

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