Hayes, Carlton J. H., author
Macmillan, 1932
Buku Teks
edited by Wolf Gewehr
Routledge, 1998
Buku Teks
Jackson, J. Hampden, author
Cambridge University Press, 1941
Buku Teks
Nevalainen, Terttu, author
Edinburgh University Press, 2006
Buku Teks
Jill Kraye and M. W. F. Stone
Routledge, 2000
Buku Teks