MLA

De Keersmaeker, Goedele. Polarity, Balance of Power and International Relations Theory. Springer International Publishing, 2017.

APA

De Keersmaeker, G. (2017). Polarity, Balance of Power and International Relations Theory. Springer International Publishing.

Chicago

De Keersmaeker, Goedele Polarity, Balance of Power and International Relations Theory. : Springer International Publishing, 2017.