Heale, Martin
The abbots and priors of late medieval and Reformation England
Oxford University Press, 2016
 eBooks
Steane, John
Archaeology of the medieval English monarchy
Routledge, 1999
 Buku Teks SO
Ker, W.P. (William Paton), 1855-1923
Medieval English literature
Oxford University Press, 1948
 Buku Teks SO
Ghirshman, R.
Iran : from the earliest times to the islamic conquest
Penguin Books, 1954
 Buku Teks SO
Kennedy, Charles W.
The earliest English poetry : a critical survey of the poetry written before the Norman Conquest
Oxford University Press, 1943
 Buku Teks SO