Kopyś, T. (2012). The policy of John Paul II towards the churches behind the Iron Curtain in the second half of the 20th century. The Pontifical University of John Paul II in Krakow.
Lua i Stíl Chicago (17ú heag.)Kopyś, Tadeusz. The Policy of John Paul II Towards the Churches Behind the Iron Curtain in the Second Half of the 20th Century. The Pontifical University of John Paul II in Krakow, 2012.
Lua MLA (9ú heag.)Kopyś, Tadeusz. The Policy of John Paul II Towards the Churches Behind the Iron Curtain in the Second Half of the 20th Century. The Pontifical University of John Paul II in Krakow, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.