International Peace Research Association & Alger, C. F. (1998). The future of the United Nations system: Potential for the twenty-first century. United Nations University Press.
Chicago-viite (17. p.)International Peace Research Association ja Chadwick F. Alger. The Future of the United Nations System: Potential for the Twenty-first Century. Tokyo ; New York: United Nations University Press, 1998.
MLA-viite (8. p.)International Peace Research Association ja Chadwick F. Alger. The Future of the United Nations System: Potential for the Twenty-first Century. United Nations University Press, 1998.
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