APA-ийн эшлэл(7 дахь хэвлэлт)

Ur, P. (1981). Discussions that work: Task-centred fluency practice. Cambridge University.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Ur, Penny. Discussions That Work: Task-centred Fluency Practice. Cambridge: Cambridge University, 1981.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Ur, Penny. Discussions That Work: Task-centred Fluency Practice. Cambridge University, 1981.