| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1976 | 978-0-8428-0004-4 | Ralph K. Alger | Basic Skills in Grammar One |
| '' | 978-0-8428-0005-1 | '' | Basic Skills in Grammar Two |
| 1980 | 978-0-8428-0006-8 | Lee L. Gray | Better and Faster Reading |
| 1988 | 978-0-8428-2213-8 | Malcolm Shepherd Knowles | The Modern Practice of Adult Education: From Pedagogy to Andragogy |
| 1983 | 978-0-8428-2215-2 | Malcolm Knowles | Self-directed Learning |