Não informado. (2004). Teaching thinking & problem solving. Research for Better Schools.
Čikaški stil citiranja (17. izdanje)Não informado. Teaching Thinking & Problem Solving. Philadelphia, Pa: Research for Better Schools, 2004.
MLA način citiranja (8. izdanje)Não informado. Teaching Thinking & Problem Solving. Research for Better Schools, 2004.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.