| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| leadership: what effective managers really do and how they do it | 978-O-O7-O55O11-7 (O-O7-O55O11-5) | 1979 |
L. S. · Leonard A. Sayles · Leonard R. Sayles · Leonard Sales · Leonard Schalk · Leonard Shyles · Leonard Silk · Leonhard Salleck · Leonhard Sallek