Citazione Stile APA (7a Edizione)

Grygiel, J. J. (2006). Great powers and geopolitical change. Johns Hopkins University Press.

Citazione stile Chigago Style (17a edizione)

Grygiel, Jakub J. Great Powers and Geopolitical Change. Baltimore: Johns Hopkins University Press, 2006.

Citatione MLA (8a ed.)

Grygiel, Jakub J. Great Powers and Geopolitical Change. Johns Hopkins University Press, 2006.