Війтишин, Володимир. 2012. “The Originality of the Ecumenical Teachings of John Paul II”. Good Parson: Scientific Bulletin of Ivano-Frankivsk Academy of John Chrysostom. Theology. Philosophy. History, no. 4 (January):7-30. http://journal.ifaiz.edu.ua/index.php/gp/article/view/334.