Keane, John
Cambridge University Press, 2005
Buku Teks
Tester, Keith
Routledge, 1992
Buku Teks
Muhammad A.S. Hikam
LP3ES, 1996
Buku Teks
White, Gordon
Clarendon Press, 1996
Buku Teks
edited Nancy L. Rosenblum and Robert C. Post
Princeton University Press , 2002
Buku Teks