Пітей, Н. А. “NORMALIZATION OF AMERICAN-RUSSIAN RELATIONS DURING THE FIRST YEARS OF BARACK OBAMA`S PRESIDENCY”. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY Idea, no. 5-6(41-42), June 2019, pp. 159-6, https://pvntsh.nung.edu.ua/index.php/idea/article/view/482.