Saya mau tau Karya dari Arthur Koestler

Scammell, Michael, 2009. Koestler: The Literary and Political Odyssey of a Twentieth-Century Skeptic . also published in UK as Koestler. The Indispensable Intellectual, London: Faber, 2010.

Road Warrior Article in December 2009 issue of the New Yorker. Differs with the Wikipedia entry on many features of Koestler's biography.