APA-viite (7. p.)

Gabry?s-Barker, D. (2018). Third age learners of foreign languages. Multilingual Matters.

Chicago-viite (17. p.)

Gabry?s-Barker, Danuta. Third Age Learners of Foreign Languages. Bristol ; Blue Ridge Summit: Multilingual Matters, 2018.

MLA-viite (9. p.)

Gabry?s-Barker, Danuta. Third Age Learners of Foreign Languages. Multilingual Matters, 2018.