↑ a b Manvell, Roger; Heinrich Fraenkel (2010) . Doctor Goebbels: his Life and Death. New York: Skyhorse, ISBN 978-1-61608-029-7, pp. 140-141.
↑ Manvell, Roger; Heinrich Fraenkel (2010) . Doctor Goebbels: his Life and Death. New York: Skyhorse, ISBN 978-1-61608-029-7, pág. 121.