APA (7th ed.) Citation

Helleberg, C. G. [. A Book Written by the Spirits of the So-Called Dead.

Chicago Style (17th ed.) Citation

Helleberg, Carl Gustav [Compiler]. A Book Written by the Spirits of the So-Called Dead.

MLA (9th ed.) Citation

Helleberg, Carl Gustav [Compiler]. A Book Written by the Spirits of the So-Called Dead.

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