Attridge, Derek, author
Longman, 1982
Buku Teks
Geoffrey, Leech N., author
Longmans, 1993
Buku Teks
Grierson, Herbert John Clifford, Sir, 1866-1960, author
Chatto and Windus, 1950
Buku Teks
Corcoran, Neil, author
Longman, 1993
Buku Teks
Harrison, G.B., author
Penguin Books , 1953
Buku Teks