Huyghe, Rene
Dawn after dark
Weatherhill, 2007
 Buku Teks SO
Fischer, Eric
The passing of the European age : a study of the transfer of Western civilization and its renewal in other continents
Harvard University Press, 1943
 Buku Teks SO
Toffler, Alvin
Kejutan masa depan
Pantja Simpati, 1989
 Buku Teks SO
Toffler, Alvin
Future shock
Bantam Books, 1990
 Buku Teks SO
Hocking, William Ernest
Coming world civilization/William Ernest Hocking
Harpers and Brothers Publisher, 1956
 Buku Teks SO