| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Keyboarding Speed and Control Builders | 978-0-538-20080-6 | 1984 | |
| Micropace 3 with Skill Building Lessons | 978-0-538-72989-5 | 2007 | Walter M. Sharp |
| Skill Builders | 978-0-538-64455-6 | 1996 | |
| Skill Building Pro | 978-0-538-72991-8 | 2007 | Walter M. Sharp |
D. J. · D. Johnson · R.D. · R.J. · R. Johnson · Ronald D. · Ronald J. · Ronald Johnson