^Sandfeld, Gunnar (1969). Teaterkunst på små scener: Dansk provinsteater mellem to verdenskrige [Theater art on small stages: Danish provincial theater between two world wars] (in Danish). Nyt Nordisk Forlag. p. 332. Sigfred Johansen (1908-1953) debuterede uden forudgående uddannelse i efteråret 1928 hos Harald Stabehl i Johs. [Sigfred Johansen (1908-1953) made his debut without prior training in the autumn of 1928 with Harald Stabehl in Johs.]