Cita APA (7a ed.)

Budge, I., & Keman, H. (1990). Parties and democracy: Coalition formation and government functioning in twenty states. Oxford University Press.

Cita Chicago Style (17a ed.)

Budge, Ian, y Hans Keman. Parties and Democracy: Coalition Formation and Government Functioning in Twenty States. New York [etc.]: Oxford University Press, 1990.

Cita MLA (9a ed.)

Budge, Ian, y Hans Keman. Parties and Democracy: Coalition Formation and Government Functioning in Twenty States. Oxford University Press, 1990.