Barkley, Elizabeth F. Collaborative learning Techniques : A Handbook for college Faculty - 2nd - Singapore JOSSEY-BASS : A wiley Brand 2014 - pg 417 ISBN: 978-1-118-76155-7 Publisher. No.: Allied Informatics Subjects--Topical Terms: Centre for Teaching & Learning, Learning Techniques Dewey Class. No.: 378.125 BAR