Quesada Pacheco, A. (2005). Web-Based Learning (WBL): A challenge for foreign languaje teachers. Universidad de Costa Rica.
Chicago-viite (17. p.)Quesada Pacheco, Allen. Web-Based Learning (WBL): A Challenge for Foreign Languaje Teachers. Universidad de Costa Rica, 2005.
MLA-viite (9. p.)Quesada Pacheco, Allen. Web-Based Learning (WBL): A Challenge for Foreign Languaje Teachers. Universidad de Costa Rica, 2005.
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