Speak to Influence: How to Unlock the Hidden Power of Your Voice
by
Susan Berkley
Paperback
details (
USA
).
ISBN: 978-0-9664302-1-9
ISBN-10: 0-9664302-1-2
Campbell Hall Press
· 1999
See also:
2004
Paperback
Speak to Influence: How to Unlock the Hidden Power of Your Voice