APA (7th ed.) Citation

Guggenbühl-Craig, A. (1999). The emptied soul: On the nature of the psychopath (New ed.). Spring Publications.

Chicago Style (17th ed.) Citation

Guggenbühl-Craig, Adolf. The Emptied Soul: On the Nature of the Psychopath. New ed. Woodstock, Conn.: Spring Publications, 1999.

MLA (9th ed.) Citation

Guggenbühl-Craig, Adolf. The Emptied Soul: On the Nature of the Psychopath. New ed. Spring Publications, 1999.