| title | ISBN-13 | year of publication |
|---|---|---|
| Essential Welsh Dictionary: Teach Yourself | 978-1-4441-0405-9 | 2010 |
| Teach Yourself Welsh Dictionary | 978-0-07-143466-9 | 2006 |
| The psychology of counseling | 978-0-03-078270-1 | 1970 |
| Welsh Dictionary | 978-0-340-87110-2 | 2003 |
C L · C. Lewis · E C. · E. L. · E. Lewis · Edwin Clark Lewis · Edwin L. · Edwin Lewis
Hodder & Stoughton · Holt McDougal · McGraw-Hill