Franklin

MLA

Verhoeven, Ludo Th, and John H. A. L. de Jong. The Construct of Language Proficiency : Applications of Psychological Models to Language Assessment. Amsterdam: John Benjamins Pub. Co., 1992.

APA

Verhoeven, L. Th, & Jong, J. H. A. L. de. (1992). The construct of language proficiency : applications of psychological models to language assessment. Amsterdam: John Benjamins Pub. Co.

Chicago

Verhoeven, Ludo Th., and John H. A. L. de Jong. The Construct of Language Proficiency: Applications of Psychological Models to Language Assessment. Amsterdam: John Benjamins Pub. Co., 1992.