Quigley, Carroll, _The Evolution of Civilizations_, N.Y.: MacMillan, 1961.
Randall, Henry J., _The Creative Centuries_, N.Y.: Longmans, 1944.
Rod, Edouard, _L'Imperialisme_, Paris: Revue des Deux Mondes, 1907.
Rostovtzeff, Mikhail I., _Economic and Social History of the Roman Empire_, Oxford: Clarendon Press, 1926.
Schneider, Hermann, _The History of World Civilization_, N.Y.: Harcourt Brace, 1932. 2 vols.
Schumpter, Joseph, _Zur Soziologiedes Imperialismus_, Tubingen: Mohr, 1919.
Schrecker, Paul, _Work and History_, Princeton: University of Princeton Press, 1948.
Schweitzer, Albert, _The Philosophy of Civilization_, N.Y.: MacMillan, 1949.
Seignobos, Charles, _The Rise of European Civilization_, N.Y.: Knopf, 1938.
Sellery, George C., _The Founding of Western Civilization_, N.Y.: Harper, 1929.
Spengler, Oswald, _Decline of the West_, N.Y.: Knopf, 1928.
Swain, Edgar S., _A History of World Civilization_, N.Y.: McGraw Hill, 1938.
Toynbee, Arnold J., _A Study of History_, N.Y.: Oxford, 10 vols.
UNESCO, _Scientific and Cultural History of Mankind_, N.Y.: Harper and Row, 6 vols.
Walker, C.C., _The Biology of Civilization_, N.Y.: MacMillan, 1930.
Walsh, Correa Moylan, _The Climax of Civilization_, N.Y.: Sturgis, 1917.
Wells, H.G., _The Salvaging of Civilization_, N.Y.: MacMillan, 1922.
Widney, Joseph, _Civilizations, their Diseases and Rebuilding_, Los Angeles: Pacific Publishing Co., 1937.
Zimmern, Alfred E., _Greek Commonwealth_, Oxford, Clarendon Press, 1911.
End of Project Gutenberg's Civilization and Beyond, by Scott Nearing