| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| Presidents, Prime Ministers and Chancellors: Executive Leadership in Western Democracies | Hardcover | 978-1-4039-4250-0 (1-4039-4250-1) | 2004 |
| Presidents, Prime Ministers and Chancellors: Executive Leadership in Western Democracies | Paperback | 978-1-4039-4251-7 (1-4039-4251-X) | 2004 |
Harry L. Helms · Jeffrey L. Helms · L -H · L. Jay Helms · L. L Helms · Laure Helms · Lelia B. Helms · Lester Helms · Lester L. Helms · Ludger Helms