Home › Authors › Valerie Wiener 👤 Valerie Wiener 6 books Books by Valerie Wiener Power Positioning 2000 Winning the War Against Youth Gangs 1999 Winning the War Against Youth Winning the War Against Youth Gangs : a Guide for Teens, Families, and Communities 1999 The Nesting syndrome 1997 Gang Free 1995 Power communications 1994