Vasquez, John A. (1983) The Tangibility of Issues and Global Conflict: A Test of Rosenau's Issue Area Typology, Journal of Peace Research 20 (2): 179–192.
Journal article
Vasquez, John A. (1983) The Tangibility of Issues and Global Conflict: A Test of Rosenau's Issue Area Typology, Journal of Peace Research 20 (2): 179–192.