Purhonen, S. (2010). Usability of the testing criteria for English proficiency in competence tests: Assessor perceptions.
Chicago-viite (17. p.)Purhonen, Seija. Usability of the Testing Criteria for English Proficiency in Competence Tests: Assessor Perceptions. Jyväskylä, 2010.
MLA-viite (9. p.)Purhonen, Seija. Usability of the Testing Criteria for English Proficiency in Competence Tests: Assessor Perceptions. 2010.
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