Paul, Richard. Critical thinking : tools for taking charge of your learning and your life / Richard Paul, Linda Elder. - 2nd ed. - Upper Saddle River, NJ : Pearson/Prentice Hall, c2006. - xxx, 514 p ; 24 cm. ISBN: 0131149628 LCCN: 2005016122 Subjects--Topical Terms: Critical thinking. Dewey Class. No.: 370.15/2