Ur, P. Discussions that work: Task-centred fluency practice (1a ed., 8a reimpresión.).
Lua i Stíl Chicago (17ú heag.)Ur, Penny. Discussions That Work: Task-centred Fluency Practice. 1a ed., 8a reimpresión.
Lua MLA (8ú heag.)Ur, Penny. Discussions That Work: Task-centred Fluency Practice. 1a ed., 8a reimpresión.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.