Artikel Jurnal
Turnbull, Stephen R., author
Osprey, 2003
Buku Teks
Finkel, Caroline, author
A member of the perseus Books Group, 2005
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Shaw, Stanford, author
Cambridge University Press, 1997
Buku Teks
Hanioglu, M. Sükrü, author
Princeton univ. press, 2010
Buku Teks