4 1 10 An Introduction to Critical Thinking Halpern, Diane F. Primary Author mixed material New Jersey Lawrence Erlbaum Associaties, Publishers 2003 Tools for Taking Charge of Your Professional and Personal Life Paul, Richard W. Primary Author Elder, Linda Primary Author mixed material U.S.A Financial Times Prentice Hall 2002 In 20 Minutes a Day Starkey, Lauren Primary Author mixed material New York Learning Express 2004 A Resource Handbook Fook, Jan Primary Author Gardner, Fiona Primary Author mixed material Poland Open University Press 2007