| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| World Studies: for Christian Schools | 978-1-59166-431-4 (1-59166-431-4) | 2005 | Terri Koontz · Mark Sidwell |
| World Studies for Christian Schools | 978-1-57924-092-9 (1-57924-092-5) | 2000 | Terri Koontz · Mark Sidwell |
| World Studies For Christian Schools: Books 1&2 | 978-1-57924-235-0 (1-57924-235-9) | 1999 | Terri L. Koontz · Mark Sidwell |