SWIFT, Graham. Making An Elephant. [s.l.]: Scribner UK 278 s. Dostupné online. ISBN9781471161957. (anglicky) Google-Books-ID: 2sv3DQAAQBAJ.
WOLF, Jiri; RAWLINGS, Stuart. Good Soldier Wolf: One Man's Struggle for Freedom in Czechoslovakia. [s.l.]: University Press of America 172 s. Dostupné online. ISBN9780819193889. (anglicky) Google-Books-ID: njgVstTqCWsC.