Paul, Richard S. Critical thinking : tools for taking charge of your learning and your life / by Richard Paul and Linda Elder - Upper Saddle River, N. J. Prentice Hall, 2001. - xx, 428 pages : illustrations ; 23 cm. Includes bibliographical references. ISBN: 0130869724 Subjects--Topical Terms: Critical thinkingStudy skills LC Class. No.: B809.2 / P28 2001