Παραπομπή σε μορφή APA (7η εκδ.)

Verhoeven, L. T., & Jong, J. H. A. L. d. (1992). The construct of language proficiency: Applications of Psychological models to language assessment. John Benjamins Publishing Company.

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

Verhoeven, Ludo Th, και John H. A. L. de Jong. The Construct of Language Proficiency: Applications of Psychological Models to Language Assessment. John Benjamins Publishing Company, 1992.