Graham, Stuart
Cambridge University Press , 1994
Buku Teks
Foley, James D., author
John Benjamins B. V., 1979
Buku Teks
Lang, Margaret, author
Routledge, 2001
Buku Teks
Whitmarsh, W. F. H.
Longmans, Green and Co., 1960
Buku Teks
Laws, Valerie
Buku Teks