1.

The Power of Focus: What the Worlds Greatest Achievers Know about The Secret of Financial Freedom and Success
by: Jack Canfield, Mark Victor Hansen, Les Hewitt
March 01, 2000

2.

El Poder de Mantenerse Enfocado: Como dar en el blanco financiero, personal y de negocios con absoluta certeza
by: Jack Canfield, Mark Hansen, Les Hewitt
September 01, 2004

3.

The Power of Focus for Women: How to Live the Life You Really Want
by: Fran Hewitt, Les Hewitt
October 15, 2003

4.

Play to Win in Business and Life (Audio Business Course)
by: Donald Trump, Les Hewitt
January 01, 2006

5.

The Power of Faithful Focus: A Practical Christian Guide to Spiritual and Personal Abundance (Power of Focus)
by: Les Hewitt, Charles Self
September 01, 2004

6.

The Power of Focus for College Students: How to Make College the Best Investment of Your Life (Power of Focus)
by: Les Hewitt, Andrew Hewitt, Luc d'Abadie, Donald Trump
November 15, 2005

7.

Propagation of Radiowaves (Iee)
from: Institution of Electrical Engineers
1996-11

8.

Es suvida, acepte el reto
by: Jack Canfield, Mark Hansen, Les Hewitt
2001

9.

O Poder da Focalização - Como atingir os seus objectivos profissionais, pessoais e financeiros com garantia absoluta
by: Jack Canfield, Les Hewitt, Mark Victor Hansen
2007

10.

The Power of Focus
by: Jack/ Hewitt, Les/ Hansen, Mark Victor Canfield
March 01, 2000