| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| At Your Service: How to Attract New Customers, Increase Sales, and Grow Your Business Using Simple Customer Service Techniques | 978-1-118-21722-1 (1-118-21722-5) | 2012 |
F. E. · Frances Elkins · Francis ELZINGRE · Frank Eliassen · Frank Elsner · Franz Elsensohn