edited by Geoffrey Parker
Cambridge University Press, 1995
Buku Referensi
Saxby, H.M., author
Wentworth, 1969
Buku Teks
Trevelyan, George Macaulay, 1876-1962, author
Longmans, Green, 1950
Buku Teks
Trevelyan, George Macaulay, 1876-1962, author
Longmans, Green, 1951
Buku Teks
Spencer Press , 1955
Buku Teks