Sources
Cornish, Nik. Hitler versus Stalin: The Eastern Front 1941-1942: Barbarossa to Moscow. Barnsley, South Yorkshire: Pen & Sword Military, 2016.
Hellbeck, Jochen. Stalingrad: The City That Defeated the Third Reich. New York: PublicAffairs, 2015.
Hill, Alexander. The Red Army and the Second World War. Cambridge, United Kingdom: Cambridge University Press, 2019.
Nagorski, Andrew. The Greatest Battle: Stalin, Hitler, and the Desperate Struggle for Moscow That Changed the Course of World War II. New York: Simon & Schuster, 2007.
Ius Sisovich, Ivan Select Diary Entries,1939-1945.