APA (7th ed.) Citation

Duverger, M. (1980). A new political system model: Semi-presidential government. European journal of political research.

Chicago Style (17th ed.) Citation

Duverger, Maurice. "A New Political System Model: Semi-presidential Government." European Journal of Political Research 1980.

MLA (8th ed.) Citation

Duverger, Maurice. "A New Political System Model: Semi-presidential Government." European Journal of Political Research, 1980.