APA (7th ed.) Citation

Küng, H. (1970). Was ist Kirche? Herder.

Chicago Style (17th ed.) Citation

Küng, Hans. Was Ist Kirche? Freiburg [etc.]: Herder, 1970.

MLA (9th ed.) Citation

Küng, Hans. Was Ist Kirche? Herder, 1970.

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