ebrary, Inc, Verhoeven, L. T., & Jong, J. H. A. L. d. (1992). The construct of language proficiency: Applications of psychological models to language assessment. John Benjamins Pub. Co..
Chicago-čujuhus (17. p.)ebrary, Inc, Ludo Th Verhoeven, juo John H. A. L. de Jong. The Construct of Language Proficiency: Applications of Psychological Models to Language Assessment. Amsterdam ; Philadelphia: John Benjamins Pub. Co., 1992.
MLA-čujuhus (9. p.)ebrary, Inc, et al. The Construct of Language Proficiency: Applications of Psychological Models to Language Assessment. John Benjamins Pub. Co., 1992.
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