Roshchin, E. (2009). Friendship in international relations: A history of the concept.
Chicago-viite (17. p.)Roshchin, Evgeny. Friendship in International Relations: A History of the Concept. Jyväskylä, 2009.
MLA-viite (9. p.)Roshchin, Evgeny. Friendship in International Relations: A History of the Concept. 2009.
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