Franklin, Sarah
Routledge, 1997
Buku Teks
New york, Burt Franklin and company, Inc
Majalah, Jurnal, Buletin
Hirsch, Eric Donald, Jr.
Schwartz Publishing, 1988
Buku Teks
Gelernter, Mark
Manchester University Press, 2001
Buku Teks
Hirsch, Eric Donald, Jr.
Sidney Schwartz, 1988
Buku Teks