APA-ийн эшлэл(7 дахь хэвлэлт)

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

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

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

MLA -ийн эшлэл (9 дэх хэвлэлт)

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