| title | ISBN-13 | year of publication | |
|---|---|---|---|
| Elmer Leterman's book of useful quotations, | 978-0-8375-6745-7 | 1972 | |
| Personal Power: An Unorthodox Guide to | 978-0-02-080990-6 | 1985 | |
| Personal Power Through Creative Selling | 978-0-02-080500-7 | 1962 | |
| Provisionen fallen nicht vom Himmel. | 978-3-453-53111-6 | 1980 |
Droke House/Hallux · Heyne · Macmillan