K. C. · K S · S.C. · Shin Crandall
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Impact BRE 3 Work Book | 978-1-337-28415-8 (1-337-28415-7) | 2016 |
| Impact BRE 4 Work Book | 978-1-337-28416-5 (1-337-28416-5) | 2016 |
| Impact Foundation: Workbook | 978-1-337-62481-7 (1-337-62481-0) | 2017 |