Kelly, J. M. (John Maurice)
Clarendon Press, 2005
Buku Teks
Barnstone, Willis
Yale University Press , 1993
Buku Teks
Harrison, John B.
Alfred A. Knopf , 1966
Buku Teks
Kelly, L.G.
Basil Blackwell, 1979
Buku Teks
Nisbet, Robert A.
Oxford University Press, 1970
Buku Teks