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Lua i Stíl Chicago (17ú heag.)Phan, Huy P. An Examination of Achievement Goals in Learning: A Quasi-quantitative Approach. Universidad de Almería, 2012.
Lua MLA (8ú heag.)Phan, Huy P. An Examination of Achievement Goals in Learning: A Quasi-quantitative Approach. Universidad de Almería, 2012.
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