2[1]Clareson,Thomas D.Understanding Contemporary American Science Fiction:the formative period,1926-1970[M].Columbia,S.C.:Univ.of South Carolina Pr.,1990:21-25.
3[3]Nicholls,Peter.ed.The Encyclopedia of Science Fiction:an illustrated A to Z[M].Granada Publishing:London Toronto Sydney New York,1979:942-943.
4[4]Smith,Curtis C.Twentieth-Century Science-Fiction Writers:second edition[M].Chicago and London:St.James Press,1986:65.
5[5]Seed,David.American Science Fiction and the Cold War:Literature and Film[M].Chicago and London:Fitzroy Dearborn Publishers,2001:34-37.
6[6]MaCarthy,Joseph.The American Promise:a history of the United States from 1865.ed.James L.Roark,and Michael P.Johnson[M].Boston:Bedford Books,1998:320-324.
2Melvyn P Leffler,A Preponderance of power:national security, the Truman administration and the Cold War,California: Stanford University Press, 1992, p. 11.
3David M Kennedy, Lizabeth Cohen, Thomas A Bailey, The American Pageant: A History of the Republic, 13th Edition, Boston: Houghton Mifflin Company, 2006 ,p. 865.
4Philip K Dick, The Game-players of Titan, New York : Vintage Books, 1992, p. 1,2,5,6,9.
5Philip K Dick, The Game-players of Titan, New York : Vintage Books, 1992, p. 58,63,68.
6David M Kennedy, Lizabeth Cohen, Thomas A Bailey, The American Pageant : A History of the Republic, 13 th Edition, Boston : Houghton Miff- lin Company, 2006 ,p. 874.
7Philip K Dick, The Game-players of Titan,New York: Vintage Books, 1992 ,p. 70.
8Philip K Dick, The Game-players of Titan,New York: Vintage Books, 1992,p. 83,100.
