Clark, Ruth Colvin E- learning and the science of instruction proven guidelines for consumers and designers of multimedia learning - 2nd - San francisco Pfeiffer 2008 - xvi, 476p. 24cm. ISBN: 9780787986834 Subjects--Topical Terms: MULTIMEDIABUSINESS EDUCATIONMULTIMEDIA LEARNINGTALKING SKILLS Dewey Class. No.: 658.312402854678 / CLA