Leaders Magazine,

 Majalah, Jurnal, Buletin

Salacuse, Jeswald W., author

American Management Association;, 2006

 eBooks

Sullivan, Robert, 1953-, author

Life Books, 2010

 Buku Referensi

texts by Bernard Lewis, Richard Ettinghausen, Oleg Grabar, Fritz Meier, Charles Pellat, A. Shiloah, A.J. Sabra, Edmund Bosworth, Emilio Garcia Gomez, Roger M. Savory, Norman Itzkowitz, S.A.A. Rizvi, Elie Kedourie

Thames and Hudson, 1997

 Buku Referensi

Dwyer, Denis John, author

Longman, 1979

 Buku Teks