Duleba, A. (2017). Ukraine and the Energy Union: Exploring potential for cooperation with Slovakia and the Visegrad Four. Research Center of the Slovak Foreign Policy Association.
Citace podle Chicago (17th ed.)Duleba, Alexander. Ukraine and the Energy Union: Exploring Potential for Cooperation with Slovakia and the Visegrad Four. Bratislava: Research Center of the Slovak Foreign Policy Association, 2017.
Citace podle MLA (9th ed.)Duleba, Alexander. Ukraine and the Energy Union: Exploring Potential for Cooperation with Slovakia and the Visegrad Four. Research Center of the Slovak Foreign Policy Association, 2017.
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