Wiley-Blackwell, 2013
Buku Teks
Allen, Widdowson
[publisher not identified], [date of publication not identified]
Buku Teks
Oxford University Press, 1978
Buku Teks
edited by Elaine Treharne ... [etal]
Humanities Press, 1992
Buku Teks
Djamaluddin Darwis
Rajawali, 2010
Buku Teks