Loomis, C. Grant
The Mediaeval Academy of America, 1948
Buku Teks
Battle, Michael
Blackwell Publishing, 2006
Buku Teks
Kruse, Kevin Michael, 1972-
Basic Books, 2015
Buku Teks
Isenberg, Nancy
Penguin Books, 2017
Buku Teks
Arnold, Pauline
Holiday House , 1961
Buku Teks