APA (7th ed.) Citation

Hügel, F. (1929). The life of prayer. E. P. Dutton.

Chicago Style (17th ed.) Citation

Hügel, Friedrich. The Life of Prayer. New York: E. P. Dutton, 1929.

MLA (8th ed.) Citation

Hügel, Friedrich. The Life of Prayer. E. P. Dutton, 1929.

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