Union of Utrecht (Old Catholic) (English Wikipedia)

Berlis, Angela (2008). "Women's ordination in the Old Catholic Churches of the Union of Utrecht". In Jones, Ian; et al. (eds.). Women and ordination in the Christian churches: international perspectives. London [u.a.]: T & T Clark. pp. 145–149. ISBN 9780567031549.
Guretzki, David (2009). Karl Barth on the Filioque. Barth studies. Farnham, UK: Ashgate. p. 11. ISBN 978-0-7546-6704-9.

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"Old-Catholic churches". World Council of Churches. Retrieved 27 March 2021.
"Archbishop Joris Vercammen". oikoumene.org. World Council of Churches. Archived from the original on 2008-07-09.

"Bernd Wallet aartsbisschop van Utrecht". Oud-Katholieke Parochie St. Agnes, Egmond. Bisschoppelijk Bureau. Retrieved 8 March 2020.

"Bernd Wallet verkozen tot nieuwe aartsbisschop van Utrecht". Oud-Katholieke Kerk van Nederland. Bisschoppelijk Bureau. Retrieved 8 March 2020.

"Bilateral Relations". Church of Sweden. 24 September 2020. Retrieved 27 March 2021.

Orzell, Laurence J. (May 2004). "Disunion of Utrecht: Old Catholics fall out over new doctrines". Touchstone. 17 (4). Chicago: Fellowship of St. James. ISSN 0897-327X. Archived from the original on 2004-08-30.

"Utrechter Union - History". www.utrechter-union.org. Retrieved 2023-05-06.
Berlis, Angela (n.d.). "Relations with the Anglican Church". utrechter-union.org. Translated by Conklin, Daniel G. Utrecht, NL: Utrechter Union der Altkatholischen Kirchen. Archived from the original on 2016-04-28. Retrieved 2016-04-28.
"Member Churches". utrechter-union.org. Utrecht, NL: Utrechter Union der Altkatholischen Kirchen. Archived from the original on 2016-04-10. Retrieved 2016-04-28.
"Communiqué of the IBC meeting in Prague/CZ, 2003" (Press release). Amersfoort: Utrechter Union der Altkatholischen Kirchen. 2003-11-29. Archived from the original on 2016-05-01. Retrieved 2016-05-01.
Weyermann, Maja (2011-06-21). "International Old Catholic Bishops Conference (IBC) withdraws from the parishes in Italy" (Press release). Utrecht, NL: Utrechter Union der Altkatholischen Kirchen. Archived from the original on 2016-04-30. Retrieved 2016-04-30.
"Communiqué of the IBC meeting in Breslau/PL 2000" (Press release). Utrecht, NL: Utrechter Union der Altkatholischen Kirchen. 2000-07-29. Archived from the original on 2016-05-02. Retrieved 2016-05-02.
"Canceled again: Consecration and installation of the new Archbishop Bernd Wallet". Union of Utrecht of Old Catholic Churches. Retrieved 13 November 2020.
"Agreement - Between The old Catholic churches united in the Union of Utrecht and The church of Sweden" (PDF). Retrieved 2024-01-29.

Berlis, Angela (n.d.). "Relations with the Anglican Church". utrechter-union.org. Translated by Conklin, Daniel G. Utrecht, NL: Utrechter Union der Altkatholischen Kirchen. Archived from the original on 2016-04-28. Retrieved 2016-04-28.
"Member Churches". utrechter-union.org. Utrecht, NL: Utrechter Union der Altkatholischen Kirchen. Archived from the original on 2016-04-10. Retrieved 2016-04-28.
"Communiqué of the IBC meeting in Prague/CZ, 2003" (Press release). Amersfoort: Utrechter Union der Altkatholischen Kirchen. 2003-11-29. Archived from the original on 2016-05-01. Retrieved 2016-05-01.
Orzell, Laurence J. (May 2004). "Disunion of Utrecht: Old Catholics fall out over new doctrines". Touchstone. 17 (4). Chicago: Fellowship of St. James. ISSN 0897-327X. Archived from the original on 2004-08-30.
Weyermann, Maja (2011-06-21). "International Old Catholic Bishops Conference (IBC) withdraws from the parishes in Italy" (Press release). Utrecht, NL: Utrechter Union der Altkatholischen Kirchen. Archived from the original on 2016-04-30. Retrieved 2016-04-30.
"Communiqué of the IBC meeting in Breslau/PL 2000" (Press release). Utrecht, NL: Utrechter Union der Altkatholischen Kirchen. 2000-07-29. Archived from the original on 2016-05-02. Retrieved 2016-05-02.
"Archbishop Joris Vercammen". oikoumene.org. World Council of Churches. Archived from the original on 2008-07-09.

Orzell, Laurence J. (May 2004). "Disunion of Utrecht: Old Catholics fall out over new doctrines". Touchstone. 17 (4). Chicago: Fellowship of St. James. ISSN 0897-327X. Archived from the original on 2004-08-30.