Haigh, Rupert, author
Routledge-Cavendish, 2009
Buku Teks
Evans, Desmond W., author
Pitman, 1989
Buku Teks
Fowler, H. W. (Henry Watson), 1858-1933, author
Oxford University Press, 1983
Buku Referensi
Peters, Pam, author
Cambridge University Press, 2006
Buku Referensi
Fowler, H. W. (Henry Watson), 1858-1933, author
Oxford University Press, 1950 ; 1952
Buku Referensi