Giblin, Les. Como tener seguridad y poder en las relaciones con la gente Les Giblin ; translation of Gisela W. de Rosas. - Bogotá Editorial Norma c1988. - xxiii, 199 p. ill. Translation of: How to have power and confidence in dealing with people. ISBN: 9580403309 LCCN: buc92000532 Subjects--Topical Terms: Interpersonal relations LC Class. No.: HM132 / .G5 Dewey Class. No.: 301.11/07/7