Verhoeven, L. T., & Jong, J. H. A. L. d. (1992). The construct of language proficiency. Amsterdam ; Philadelphia.
Chicago Style CitationVerhoeven, Ludo Th., and John H. A. L. de Jong. The Construct of Language Proficiency. Amsterdam ; Philadelphia, 1992.
MLA CitationVerhoeven, Ludo Th., and John H. A. L. de Jong. The Construct of Language Proficiency. Amsterdam ; Philadelphia, 1992.
Warning: These citations may not always be 100% accurate.