Sutcliffe, J.T., author
Macmillan, 1967
Buku Teks
Macintyre, Stuart, author
Oxford University Press, 1986
Buku Teks
edited by F.K. Crowley
Heinemann, 1984
Buku Teks
edited by F.K. Crowley
William Heinemann, 1974
Buku Teks
O`Sullivan, Terence, author
Macmillan, 1999
Buku Teks