| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Voice of the Eagle: The Heart of Celtic Christianity | 978-0-9701097-0-5 (0-9701097-0-9) | 2001 |
| The Voice of the Eagle/the Heart of Celtic Christianity: Homily on the Prologue to the Gospel of St. John | 978-0-940262-36-2 (0-940262-36-3) | 1990 |