Thwaite, Anthony, author
Heineman, 1984
Buku Teks
Gu, Chang-su, author
Published Simultaneously, 2001
Buku Teks
Falci, Eric, author
Cambridge University Press, 2015
Buku Teks
Corcoran, Neil, author
Longman, 1993
Buku Teks
Ross, Alan, author
British Council, 1951
Buku Teks