Gagne, Robert Mills La planificación de la enseñanza sus principios Robert M. Gagné and Leslie J. Briggs ; translated by Jorge Brash. - México Editorial Trillas 1976. - 287 p. ill. Translation of: Principles of instructional design. Includes bibliographies. ISBN: 9682404568 LCCN: buc91000224 Subjects--Topical Terms: LearningInstructional systems--Design. LC Class. No.: LB1051 / .G19618 Dewey Class. No.: 371.3