5Hheuss, Teodor. What is Quality? On the History and Task of the German Werkbund[M] l] Betts, Pau]. errs, Paul. The authority of everyday objects: a cultural history of West German industrial design. Berke]ey:Universi ty of California Press, 2004 (34):81.
6Betts,Paul. The authority of everyday objects: a cultural histo ry of" West German industrial design[M]. Berkeley: University of C alifornia Press, 2004: 2.4.7.8.76.79-81.
7Lepenies, Wolf. The seduction of culture in German history[M]. N ew Jersey : Princeton University Press, 2008:204.
8Sparke, Penny. An introduction to design and culture: 1900 to the present[M]. New York: loutledge, 2004: 203.