Dunn, John A., 1949-, author
Routledge, 2009
Buku Teks
Weiss, Sholom M., author
Rowman and Allanheld, 1984
Buku Teks
John, Arthur W., author
Thames and Hudson, 1988
Buku Teks
Farin, Gerald, author
Morgan Kaufmann , 2002
Buku Teks
Halford, D.R.C., author
Pan Books, 1971
Buku Teks