1) Jean-Claude Perrigault "21. Panzer-Division" (2002). 2) Jean de Lagarde "German Soldiers of World War Two" (1994). 3) Chris McNab "World War II Data Book The SS 1923-1945: The Essential Facts and Figures for Himmler's Stormtroopers" (2009). 4) James Lucas "Storming Eagles: German Airborne Forces in World War Two" (1988). 5) Alfred Otte "The HG Panzer Division" (1989). 6) Gary L. Simpson "Tiger Ace: The Lift Story of Panzer Commander Michael Wittmann" (1994). 7) Hans Seideler "Images of War: Hitler's Boy Soldiers: The Hitler Jugend Story" (2013). 8) Adelbert Holl "After Stalingrad: Seven Years as a Soviet Prisoner of War" (2016). 9) Stan Cook and R. James Bender "Leibstandarte SS Adolf Hitler: Volume One" (1994). 10) Henrik O. Lunde "Hitler's Wave-Breaker Concept" (2013). 11) Thomas W. Breyette and Roger James bender "Tank Killers: History of the Tank Destruction Badge" (2000). 12) German 1915 book on Zepplins.