APA-viite (7. p.)

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-viite (17. p.)

ebrary, Inc, Ludo Th Verhoeven, ja 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-viite (9. p.)

ebrary, Inc, et al. The Construct of Language Proficiency: Applications of Psychological Models to Language Assessment. John Benjamins Pub. Co., 1992.