| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| A Faith to Call Our Own: Quaker Tradition in the Light of Contemporary Movements of the Spirit | 978-0-85245-312-4 (0-85245-312-4) | 1999 | |
| Rooted in Christianity, Open to New Light: Quaker Spiritual Diversity | 978-0-9556183-3-8 (0-9556183-3-9) | 2009 | Timothy Ashworth |