Overy, R. J.
Oxford University Press, 2014
Buku Referensi
Chant, Christopher
London: Chancellor Press, 1999,
Buku Referensi
Chant, Christopher
Chancellor Press , 1999
Buku Referensi
Chant, Christophe
Chancelor Press, 1999
Buku Referensi
Toffler, Alvin
Warner Books, 1994
Buku Teks