edited by C.G. Crump and E.F. Jacob
Clarendon Press, 1951
Buku Teks
Hoyt, Robert S.
Harcourt, Brace & World, 1966
Buku Teks
general editor, H.R. Loyn
Thames and Hudson, 1991
Buku Referensi
Painter, Sidney
Alfred A. Knopf, 1961
Buku Teks
editor, William Chester Jordan
Charles Scribner's Sons, 1996
Buku Referensi