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 Style (17th ed.) Citationebrary, Inc, Ludo Th Verhoeven, and 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 (9th ed.) Citationebrary, Inc, et al. The Construct of Language Proficiency: Applications of Psychological Models to Language Assessment. John Benjamins Pub. Co., 1992.
Warning: These citations may not always be 100% accurate.