Cortina, Joe Opening doors: understanding college reading/ Joe Cortina and Janet Elder. - 4th Edition - Boston: McGraw-Hill, c2005. - xxxiv, 741 pages: color illustrations; 23 cm. Includes appendix, and index. ISBN: 0-07-287196-2 Subjects--Topical Terms: College readersReading(Higher education) Dewey Class. No.: DC 428.6 / C81o