Gaya APA
Ur, Penny. (1981).
Discussions That Work : Task - Centred Fluency Practice .
London:
Cabmbrigde University Press.
Gaya Chicago
Ur, Penny.
Discussions That Work : Task - Centred Fluency Practice.
London:
Cabmbrigde University Press,
1981.
Buku Teks.
Gaya MLA
Ur, Penny.
Discussions That Work : Task - Centred Fluency Practice.
London:
Cabmbrigde University Press,
1981.
Buku Teks.
Gaya Turabian
Ur, Penny.
Discussions That Work : Task - Centred Fluency Practice.
London:
Cabmbrigde University Press,
1981.
Buku Teks.