APA (7th ed.) Citation

Küng, H. (1980). Does God exist?: An answer for today. Doubleday.

Chicago Style (17th ed.) Citation

Küng, Hans. Does God Exist?: An Answer for Today. Garden City, N.Y.: Doubleday, 1980.

MLA (8th ed.) Citation

Küng, Hans. Does God Exist?: An Answer for Today. Doubleday, 1980.