Transformations in twentieth century Korea
edited by Chang Yun-Shik, steven hugh Lee
Routledge, 2006
 Buku Teks SO
Robinson, Michael Edison
Korea's Twentieth-Century Odyssey : a short history
University Hawaii Press, 2007
 Buku Teks
Woodham, Jonatham M.
Twentieth-Century design
Oxford University Press, 1997
 Buku Teks SO
Chant, Christopher
Twentieth century war machines
London: Chancellor Press, 1999,
 Buku Referensi
Revolutions of the late twentieth century
edited by Jack A. Goldstone, Ted Robert Gurr, Farrokh Moshiri
Westview Press, 1991
 Buku Teks SO