NEČAS, P; SZABO, S. 2009. Back to the future: Geopolitical security or chaos? 2nd print. Košice: Faculty of Aeronautics of Technical University.
Citáce podľa APA (7th ed.)Nečas, P., & Szabo, S. (2009). Back to the future: Geopolitical security or chaos? (2nd print.). Faculty of Aeronautics of Technical University.
Citácia podle Chicago (17th ed.)Nečas, Pavel, a Stanislav Szabo. Back to the Future: Geopolitical Security or Chaos? 2nd print. Košice: Faculty of Aeronautics of Technical University, 2009.
Citácia podľa MLA (8th ed.)Nečas, Pavel, a Stanislav Szabo. Back to the Future: Geopolitical Security or Chaos? 2nd print. Faculty of Aeronautics of Technical University, 2009.
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