1. Archive of Foreign Policy of the Russian Federation (AFP RF). Funda-897, Series-6, File-9, p. 124.
2. Nazarbayev, N.A. (2017). Era of independence. Nur-Sultan: Fund of the First President of the Republic of Kazakhstan.
3. Ayagan, B.G. (2010). The world of Nursultan Nazarbayev. Astana: Foliant.
4. Tsygankov, P.A. (Ed.). (2015). Theory of international relations. Moscow: Publishing House “Yurait”.
5. Tokayev, K.-Zh.K. (2008). Belasu. Almaty: LLP RPBK “Epoch”.