Gaya APA
Ur, Penny. (1992).
Discussions that work: task-centerd fluency practice .
San Fransisco:
Cambridge University Press.
Gaya Chicago
Ur, Penny.
Discussions that work: task-centerd fluency practice.
San Fransisco:
Cambridge University Press,
1992.
Text.
Gaya MLA
Ur, Penny.
Discussions that work: task-centerd fluency practice.
San Fransisco:
Cambridge University Press,
1992.
Text.
Gaya Turabian
Ur, Penny.
Discussions that work: task-centerd fluency practice.
San Fransisco:
Cambridge University Press,
1992.
Print.