Salem Al-Ali, M. (2014). The international system: the study of the theory of the concept and the characteristics and mechanisms of change. , 7(20), 218-270.
Marwan Salem Al-Ali. "The international system: the study of the theory of the concept and the characteristics and mechanisms of change". , 7, 20, 2014, 218-270.
Salem Al-Ali, M. (2014). 'The international system: the study of the theory of the concept and the characteristics and mechanisms of change', , 7(20), pp. 218-270.
Salem Al-Ali, M. The international system: the study of the theory of the concept and the characteristics and mechanisms of change. , 2014; 7(20): 218-270.