David J. Schwartz, Taller Del Exito

$10.44

Michael Jacobs, Dahbar

$18.00

Gil Molina, Proyecto Identidad

$13.04

Jorge A. Quintero Atencio, Ediciones Astro Data S.a.

$1.20

Ibsen Martinez, Planeta

$12.00

Ref. 800m9, Corpobro

$3.60

L. Hay - C. Richardson, Urano

$7.20

Libreria Mundial, Garmendia

$1.20

Denisse Robles Hernandez, Mcgraw Hill

$21.60

Bernardo Stamateas, Zenith

$7.78

Ref. 800m6, Corpobro

$3.60

Robert Greene, Oceano

$38.50

Audrey Carlan, Planeta

$16.20

$4.20

Oswaldo Trejo, Monte Avila

$6.00