Ewen, David
The world of twentieth-century music
Prentice Hall, 1968
 Buku Referensi
Kostka, Stefan
Tonal harmony : with an introduction to twentieth-century music / Stefan Kostka, Dorothy Payne
McGraw-Hill , 2000
 Buku Teks
Education and social structure in the twentieth century / edited by Walter Laqueur & George L. Mosse
edited by Walter Z. Laqueur & George L. Mosse
Harper , 1967
 Buku Teks
Fenton, Terry
Modern painting in Canada: a survey of major movements in twentieth century Canadian art / Terry Fenton, Karen Wilkin; an exhibition organized by the Edmonton Art Gallery
Edmonton Art Gallery, 1978
 Buku Teks
Revolutions of the late twentieth century
edited by Jack A. Goldstone, Ted Robert Gurr, Farrokh Moshiri
Westview Press, 1991
 Buku Teks