Kopelev, L., & Austin, A. (1979). No jail for thought (Edited and abbreviated [ed.].). Penguin.
Dyfyniad Arddull ChicagoKopelev, Lev, and Anthony Austin. No Jail for Thought. Edited and abbreviated [ed.]. Harmondsworth [etc.]: Penguin, 1979.
Dyfyniad MLAKopelev, Lev, and Anthony Austin. No Jail for Thought. Edited and abbreviated [ed.]. Penguin, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.