Hubbard, R. G., & Kane, T. (2013). Balance: The economics of great powers from ancient Rome to modern America (1st Simon & Schuster hardcover edition.). Simon & Schuster.
Cytowanie według stylu Chicago (wyd. 17)Hubbard, R. Glenn, i Tim Kane. Balance: The Economics of Great Powers from Ancient Rome to Modern America. 1st Simon & Schuster hardcover edition. New York: Simon & Schuster, 2013.
Cytowanie według stylu MLA (wyd. 9)Hubbard, R. Glenn, i Tim Kane. Balance: The Economics of Great Powers from Ancient Rome to Modern America. 1st Simon & Schuster hardcover edition. Simon & Schuster, 2013.