L. Ronald Hubbard

$4.26

Brian Tracy, Aguilar

$27.00

Florence Littauer, Unilit

$10.75

Walter Riso, Planeta

$27.50

Og Mandino, Diana

$12.00

Robin Sharma, Grijalbo

$23.94

Louise L. Hay, Urano

$12.00

Marian Rojas Estape, Espasa

$23.94

Dale Carnegie, el Trebol

$10.80

J. Canfield - M.v. Hansen, Hci

$8.55

Robin Norwood, B de Bolsillo

$29.94

Walter Riso, Norma

$12.00

James Claer, Planeta

$38.95

Stephen R. Covey, Booket

$21.95

Bladimir Aguilera, Pan House

$20.00