Grygiel, J. J. (2006). Great powers and geopolitical change. Johns Hopkins University Press.
芝加哥风格引文Grygiel, Jakub J. Great Powers and Geopolitical Change. Baltimore: Johns Hopkins University Press, 2006.
MLA引文Grygiel, Jakub J. Great Powers and Geopolitical Change. Johns Hopkins University Press, 2006.
警告：这些引文格式不一定是100％准确.