APA (7th ed.) Citation

Guardini, R. (1963). The life of faith. Paulist Press [etc.].

Chicago Style (17th ed.) Citation

Guardini, Romano. The Life of Faith. New York [etc.]: Paulist Press [etc.], 1963.

MLA (9th ed.) Citation

Guardini, Romano. The Life of Faith. Paulist Press [etc.], 1963.

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