Ur, P. (1981). Discussions that work: Task-centred fluency practice. Cambridge University.
Citación estilo ChicagoUr, Penny. Discussions That Work: Task-centred Fluency Practice. Cambridge: Cambridge University, 1981.
Cita MLAUr, Penny. Discussions That Work: Task-centred Fluency Practice. Cambridge University, 1981.
Warning: These citations may not always be 100% accurate.