(1991). On Evaluating Language Proficiency Gain in Study Abroad Environments An Empirical Study of American Students of Russian (A Preliminary Analysis of Data) / Richard D. Brecht and Others. [microform].
Чикаго стиль цитування (17-те видання)On Evaluating Language Proficiency Gain in Study Abroad Environments An Empirical Study of American Students of Russian (A Preliminary Analysis of Data) / Richard D. Brecht and Others. [microform]. 1991.
Стиль цитування MLA (9-ме видання)On Evaluating Language Proficiency Gain in Study Abroad Environments An Empirical Study of American Students of Russian (A Preliminary Analysis of Data) / Richard D. Brecht and Others. [microform]. 1991.
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