Baker, Sheridan, author
Thomas Y. Crowell, 1966
Buku Teks
Haynes, John
Routledge, 1995
Buku Teks
Crystal, David, 1941-, author
Longman, 1993
Buku Teks
Geoffrey, Leech N., author
Longmans, 1993
Buku Teks
Leech, Geoffrey N., 1936-, author
Dewan Bahasa dan Pustaka , 1993
Buku Teks