| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Purity of Heart: Is To Will One Thing | 978-0-06-130004-2 (0-06-130004-7) | 1956 | Soren Kierkegaard |
| Quaker Spirituality: Selected Writings | 978-0-8091-2510-4 (0-8091-2510-2) | 1983 | |
D S · Douglas Starr · Douglas Story · Douglas V. Steere · Douglas Van Steere