Seymou Matin Lipset and Cay Maks,It Didn't Happen Hee:Why Socialism Failed in the United States,New York: W.W.Norton &Company,2000,p.266.
例2:
Christophe Roux-Dufort,“Is Crisis Management( Only) a Management of Exceptions?”,Journal of Contingencies and Crisis Management, Vol.15,No.2,June 2007.