Lua APA (7ú heag.)
Елацков А.Б. Territorial-political and regional geopolitical systems: correlation of concepts: Статья.
Lua i Stíl Chicago (17ú heag.)Елацков А.Б. Territorial-political and Regional Geopolitical Systems: Correlation of Concepts: Статья.
Lua MLA (8ú heag.)Елацков А.Б. Territorial-political and Regional Geopolitical Systems: Correlation of Concepts: Статья.
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