APA-viite (7. p.)
Hyltenstam, K. (2016). Advanced proficiency and exceptional ability in second languages. De Gruyter Mouton.
Chicago-viite (17. p.)
Hyltenstam, Kenneth. Advanced Proficiency and Exceptional Ability in Second Languages. Berlin, [Germany] ; Boston, [Massachusetts]: De Gruyter Mouton, 2016.
MLA-viite (9. p.)
Hyltenstam, Kenneth. Advanced Proficiency and Exceptional Ability in Second Languages. De Gruyter Mouton, 2016.
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