Não informado. (2004). Teaching thinking & problem solving. Research for Better Schools.
Chicago-referens (17:e uppl.)Não informado. Teaching Thinking & Problem Solving. Philadelphia, Pa: Research for Better Schools, 2004.
MLA-referens (8:e uppl.)Não informado. Teaching Thinking & Problem Solving. Research for Better Schools, 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.