Speight, Kathleen, author
The English Universities Press, 1957
Buku Teks
Aitchison, Jean, 1938-, author
Contemporary Books, 2008
Buku Teks
Schild, Herbert, author
McGraw-Hill, 1997
Buku Teks
Bride, Mac, author
Hodder Headline Plc., 1995
Buku Teks
Gibilisco, Stan, 1953-, author
McGraw-Hill, 2011
Buku Teks