Keeton, George W., 1902-1989, author
Sir Isaac Pitman and Sons, 1950
Buku Teks
Stockwell, Nigel, author
Pitman, 1992
Buku Teks
Hudson, Alastair, author
Cavendish Publishing Limited, 2003
Buku Teks
Sydenham, Angela, author
Sweet & Maxwell, 2000
Buku Teks
Gunton, George
Appelton and Company , 1899
Buku Teks