(2000). Teachers' Use of Higher-Level Tasks in Instruction. U.S. Department of Education.
Čikaški stil citiranja (17. izdanje)Teachers' Use of Higher-Level Tasks in Instruction. U.S. Department of Education, 2000.
MLA način citiranja (9. izdanje)Teachers' Use of Higher-Level Tasks in Instruction. U.S. Department of Education, 2000.
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