Shliapentokh, V. E. “Gallup in Soviet Russia: Reflections on Boris Doktorov’s Histories of Public Opinion Studies in the United States”. Sotsiologicheskiy Zhurnal = Sociological Journal, no. 2 (March 21, 2009): С.161-174. Accessed May 19, 2024. https://www.journal-socjournal.ru/index.php/socjour/article/view/1085.