APA-čujuhus (7. p.)
Zellen, B. S., Ostrow, J. M., & Killion, D. T. (2011). The realist tradition in international relations: The foundation of Western order. Praeger.
Chicago-čujuhus (17. p.)
Zellen, Barry Scott, Joel M. Ostrow, juo David T. Killion. The Realist Tradition in International Relations: The Foundation of Western Order. Santa Barbara, Calif.: Praeger, 2011.
MLA-čujuhus (9. p.)
Zellen, Barry Scott, et al. The Realist Tradition in International Relations: The Foundation of Western Order. Praeger, 2011.
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