Paul. L, The Rote Kapelle: the CIA's history of Soviet intelligence and espionage networks in Western Europe, 1936-1945., Washington DC, University Publications of America, (ISBN0-89093-203-4, lire en ligne), p. 139
Stephen Brockmann, James D. Steakley et Jost Hermand, Heroes and heroism in German culture : essays in honor of Jost Hermand, April 2000, Amsterdam, Rodopi, (ISBN9789042014565, lire en ligne), p. 116
Cora Sol Goldstein, Capturing the German eye : American visual propaganda in occupied Germany, Chicago, University of Chicago Press, (ISBN9780226301693, lire en ligne), p. 120
dramatikerunion.de
(de) Auszeichnungen, Die Dramatiker Union, consulté le 28 janvier 2012