Denemark, Robert A. “Review of "LEADING SECTORS AND WORLD POWERS: THE COEVOLUTION OF GLOBAL POLITICS AND ECONOMICS" by George Modelsk:I and William R. Thompson”. Journal of World-Systems Research 3, no. 2 (August 26, 1997): 341-346. Accessed August 11, 2020. http://jwsr.pitt.edu/ojs/jwsr/article/view/104.