Cita APA (7a ed.)

Haerpfer, C. W., Bernhagen, P. a., Welzel, C., & Inglehart, R. F. (2009). Democratization (Second edition.). Oxford University Press.

Cita Chicago Style (17a ed.)

Haerpfer, Christian W., Patrick autor Bernhagen, Christian Welzel, y Ronald F. Inglehart. Democratization. Second edition. Oxford ; New York: Oxford University Press, 2009.

Cita MLA (9a ed.)

Haerpfer, Christian W., et al. Democratization. Second edition. Oxford University Press, 2009.