^Otterspeer, Willem (in Dutch) (2013). De mislukkingskunstenaar: Willem Frederik Hermans. Biografie, deel 1 (1921-1952), De Bezige Bij, Amsterdam. [The Artist of Failure: Willem Frederik Hermans. A Biography, Vol. 1, (1921-1952)]
^"...And Call Me Roger": The Literary Life of Roger Zelazny, Part 6, by Christopher S. Kovacs. In: The Collected Stories of Roger Zelazny, Volume 6: The Road to Amber, NESFA Press, 2009.
^Bergan, Ronald (19 June 1995). "The man who knew too much". The Guardian. p. 4.