Drache, Daniel, and José Luis Valdés Ugalde. 2010. “The International System: Hinge Moments and Structural Long-Term Trends. A Canadian Perspective Interview With Robert W. Cox”. Norteamérica, Revista Académica Del CISAN-UNAM 4 (02). https://doi.org/10.22201/cisan.24487228e.2009.02.28.