Triningham, J. Spencer
At The Clarendon Press, 1959
Buku Teks
edited by Stanislaw Grodz, Gina Gertrud Smith
Brill, 2014
eBooks
Beus, J. G. De
Harper & Brothers, 1953
Buku Teks
Ward, Barbara
Norton & Comp , 1957
Buku Teks
edited by Michael M. Horowitz and Thomas M. Painter
Westview Press, 1986
Buku Teks