Blanchet, Therese
Clarendon Press, 1994
Buku Teks
Balekjian, W.H.
Oceana Publications, Inc., 1967
Buku Teks
Burrows, F.
Clarendon Press , 1987
Buku Teks
Meyer, F.V.
Frederic A. Praeger , 1961
Buku Teks
George, Stephen, author
Oxford University Press, 1985
Buku Teks