|   | Digital Download details (UK). details (Germany). ISBN: 978-0-470-44066-7 ISBN-10: 0-470-44066-X | 
| See also (possibly by other authors): | ||
| 2011 | Paperback | Relationship Economics: Transform Your Most Valuable Business Contacts Into Personal and Professional Success | 
| 2008 | Unbekannter Einband | Relationship Economics: Transform Your Most Valuable Business Contacts into Personal and Professional Success |