Bailey, S.J., author
Pitman, 1948
Buku Teks
McLoughlin, J., author
Manchester University Press, 1972
Buku Teks
Uff, John, author
Sweet & Maxwell, 1981
Buku Teks
Bailey, S.J.
Sir Issac Pitman & Sons, LTD, 1948
Buku Teks
Keeton, George W., 1902-1989, author
Sir Isaac Pitman and Sons, 1950
Buku Teks