Collected Works, vol. 25, pp. 461–462, Marx Engels Lenin on Scientific Socialism. Moscow: Novosti Press Ajency Publishing House. 1974. Archived from the original on 31 January 2020. Retrieved 18 March 2016.
"While Trotsky was strongly biased toward industrial development, there is little basis to suppose that he would have adopted Stalin’s forcible collectivization, slapdash economic planning, anti expert campaigns, or cultural know-nothingism. Neither Trotsky nor Bukharin would have pursued anything like Stalin’s pseudo-revolutionary “third period” foreign policy and his connivance in the advent of Hitler, another product of his political manoeuvring against the Bukharinists".Daniels, Robert V. (1 October 2008). The Rise and Fall of Communism in Russia. Yale University Press. p. 396. ISBN978-0-300-13493-3.
Tomasic, D. (December 1953). "The Impact of Russian Culture on Soviet Communism". The Western Political Quarterly. 6 (4). Western Political Science Association: 808–809. doi:10.2307/443211. JSTOR443211.
Tomasic, D. (December 1953). "The Impact of Russian Culture on Soviet Communism". The Western Political Quarterly. 6 (4). Western Political Science Association: 808–809. doi:10.2307/443211. JSTOR443211.
Lenin, V. I. (1965) [17 October 1921]. "The New Economic Policy and the Tasks of the Political Education Departments. Report to the Second All-Russia Congress of Political Education Departments". Lenin's Collected Works. Vol. 33 (2nd English ed.). Moscow: Progress Publishers. pp. 60–79. Archived from the original on 3 December 2011. Retrieved 2 December 2011 – via Marxists Internet Archive.
Collected Works, vol. 25, pp. 461–462, Marx Engels Lenin on Scientific Socialism. Moscow: Novosti Press Ajency Publishing House. 1974. Archived from the original on 31 January 2020. Retrieved 18 March 2016.
Lenin, V. I. (1965) [17 October 1921]. "The New Economic Policy and the Tasks of the Political Education Departments. Report to the Second All-Russia Congress of Political Education Departments". Lenin's Collected Works. Vol. 33 (2nd English ed.). Moscow: Progress Publishers. pp. 60–79. Archived from the original on 3 December 2011. Retrieved 2 December 2011 – via Marxists Internet Archive.