Beyer, B. K. (1991). Teaching thinking skills: A handbook for secondary school teachers. Allyn and Bacon.
Chicago-viite (17. p.)Beyer, Barry K. Teaching Thinking Skills: A Handbook for Secondary School Teachers. Boston: Allyn and Bacon, 1991.
MLA-viite (9. p.)Beyer, Barry K. Teaching Thinking Skills: A Handbook for Secondary School Teachers. Allyn and Bacon, 1991.
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