Inge Scholl, Students Against Tyranny: The Resistance of the White Rose, Munich, 1942–1943, translated by Arthur R. Schultz (Middletown CT: Wesleyan University Press, 1970), pp. 77–84, 89–90. (Via: Stackelberg, Roderick; Winkle, Sally Anne (2002). The Nazi Germany sourcebook: an anthology of textsp. 307. ISBN978-0-415-22214-3)