APA

O'DONNELL G., SCHMITTER P. C. & WHITEHEAD L. (1991). Transitions from authoritarian rule. Baltimore: The Johns Hopkins University Press.

Chicago

O'DONNELL Guillermo, SCHMITTER Philippe C and WHITEHEAD Laurence. 1991. Transitions from authoritarian rule. Baltimore: The Johns Hopkins University Press.

Harvard

O'DONNELL G., SCHMITTER P. C. and WHITEHEAD L. (1991). Transitions from authoritarian rule. Baltimore: The Johns Hopkins University Press.

MLA

O'DONNELL Guillermo, SCHMITTER Philippe C and WHITEHEAD Laurence. Transitions from authoritarian rule. Baltimore: The Johns Hopkins University Press. 1991.