CreateSpace Independent Publishing Platform · Nabu Press
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Christian Sects in the Nineteenth Century | 978-1-4774-8373-2 (1-4774-8373-X) | 2012 |
| Christian Sects in the Nineteenth Century, in a Series of Letters | 978-1-144-02790-0 (1-144-02790-X) | 2010 |