Schapiro, J. Salwyn
The world in crisis : political and social movement in the twentieth century / J. Salwyn Schapiro
McGraw-Hill, 1950
 Buku Teks
Achmad Jainuri
The muhammadiyah movement in twentieth-century Indonesia : a socio-religius study
McGill University Montreal, 1992
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Woodham, Jonatham M.
Twentieth-Century design
Oxford University Press, 1997
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Revolutions of the late twentieth century
edited by Jack A. Goldstone, Ted Robert Gurr, Farrokh Moshiri
Westview Press, 1991
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Black, C.E.
Twentieth Century Europa: a history
Alfred A. Knopf, 1961
 Buku Teks