edited by Margo Todd
Routledge, 1995
Buku Teks
Reardon. Bernard M.G.
Longman, 1981
Buku Teks
Elton, G. R. (Geoffrey Rudolph), author
Cambridge University Press, 1972
Buku Teks
Heale, Martin, author
Oxford University Press, 2016
eBooks
Coulton, G.G. (George Gordon), author
Macmillan; University Press, 1938
Buku Teks