Artikel Jurnal
Reynolds, Mivhael A., author
Cambridge University Press, 2015
Buku Teks
Eissenstadt, S. N.
New York, N. Y. Free Press 1967,
Buku Teks
Aveni, Anthony, author
Tauris Parke Paperbacks, 2000
Buku Teks
edited by Michael Nylan, Michael Loewe
Cambridge University Press, 2010
Buku Teks