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.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)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.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)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.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.