APA

United States, . (2015). Ukraine: confronting internal challenges and external : hearing before the Commission on Security and Cooperation in Europe, One Hundred Thirteenth Congress, second session, April 9, 2014. Washington: U.S. Government Publishing Office.

Chicago

United States, . 2015. Ukraine: confronting internal challenges and external : hearing before the Commission on Security and Cooperation in Europe, One Hundred Thirteenth Congress, second session, April 9, 2014. Washington: U.S. Government Publishing Office.

Harvard

United States, . (2015). Ukraine: confronting internal challenges and external : hearing before the Commission on Security and Cooperation in Europe, One Hundred Thirteenth Congress, second session, April 9, 2014. Washington: U.S. Government Publishing Office.

MLA

United States, . Ukraine: confronting internal challenges and external : hearing before the Commission on Security and Cooperation in Europe, One Hundred Thirteenth Congress, second session, April 9, 2014. Washington: U.S. Government Publishing Office. 2015.