APA-viite (7. p.)

Purhonen, S., tiedekunta, H., Humanities, F. o., laitos, K., Languages, D. o., Jyväskylä, U. o., & yliopisto, J. (2010). Usability of the testing criteria for English proficiency in competence tests: Assessor perceptions.

Chicago-viite (17. p.)

Purhonen, Seija, Humanistinen tiedekunta, Faculty of Humanities, Kielten laitos, Department of Languages, University of Jyväskylä, ja Jyväskylän yliopisto. Usability of the Testing Criteria for English Proficiency in Competence Tests: Assessor Perceptions. 2010.

MLA-viite (9. p.)

Purhonen, Seija, et al. Usability of the Testing Criteria for English Proficiency in Competence Tests: Assessor Perceptions. 2010.