Bruce R. Maxwell. (2020). Problem-Based Learning (PBL) in a Grade 11 World History Class: Trials, Tribulations, and Triumphs. Halla Newcastle Education and Research Center.
Čikaški stil citiranja (17. izdanje)Bruce R. Maxwell. Problem-Based Learning (PBL) in a Grade 11 World History Class: Trials, Tribulations, and Triumphs. Halla Newcastle Education and Research Center, 2020.
MLA način citiranja (9. izdanje)Bruce R. Maxwell. Problem-Based Learning (PBL) in a Grade 11 World History Class: Trials, Tribulations, and Triumphs. Halla Newcastle Education and Research Center, 2020.
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