Book
Prayer: A Study in the History and Psychology of Religion
Comparative historical and psychological study of prayer across religious traditions, distinguishing mystical from prophetic forms of devotion.
Where to find it
- Google Books — Prayer (Heiler), Oxford University Press 1932
- Open Library work record — Prayer by Friedrich Heiler
- Open Library edition record — Prayer (1938 printing)
- Internet Archive — Prayer; a study in the history and psychology of religion (Heiler)
- Internet Archive — Prayer: A Study in the History and Psychology of Religion (full-text scan)