5Guillermo A.O' Donnell and Philippe C. Schmitter, Transition from Authoritarian Rule: Tentative Conclusions about Uncertain Democracies, Baltimore : The Johns Hopkins University Press, 1986, pp. 3 - 5,pp. 15 - 18,pp.7-8.
6Adam Przeworski,“Some Problem in the Study of the Transition to Democracy,”in Guillermo A.O'Dormell, Philippe C. Schmitter and Laurence Whitehead, eds. , Transition from Authoritarian Rule: Comparative Perspective, Baltimore:The Johns Hopkins University Press, 1986, p. 54,p.56.
7Adam Przeworski,“Democracy as a contingent Outcome of Conflicts,”in Jon Elster and Rune Slagstad, eds., Constitutionalism and Democracy, London: Cambridge Press, 1988, p.64.