* [https://unimarc.org.ua/ifla/biblio2024/2024n1_1_0_UNIMARC_520_Former_title_continuing_558-559.pdf 520 Former title (continuing resources) // UNIMARC Bibliographic Format Manual. — IFLA, 2024. — No 1.1.0. — P. 558-559.] (англ.)** [https://unimarc.org.ua/ifla/biblio2023/2023n1_0_0_UNIMARC_520_Former_title_continuing_550-551.pdf 520 Former title (continuing resources) // UNIMARC Bibliographic Format Manual. — IFLA, 2023. — No 1.0.0. — P. 550–551.] (англ.)

* [https://www.transition-bibliographique.fr/wp-content/uploads/2018/07/B520-6-2012.pdf 520 – Titre précédent] , ([https://web.archive.org/web/2oe_/https://www.transition-bibliographique.fr/wp-content/uploads/2018/07/B520-6-2012.pdf архів]) (mise à jour 2012), Bibliographic Transition in France (фр.)* [http://www.lib.bg/prevodi/unimarc/uni5.html#520 520 Предишно заглавие (Продължаващи издания)], ([https://web.archive.org/web/2oe_/http://www.lib.bg/prevodi/unimarc/uni5.html#520 архів]), СБИР (болг.)* [http://home.izum.si/izum/e-prirocniki/1_COMARC_B/520.pdf 520 Prejšnji naslov], ([https://web.archive.org/web/2oe_/http://home.izum.si/izum/e-prirocniki/1_COMARC_B/520.pdf архів]), IZUM (словен.)* [http://unimarc-it.wikidot.com/520 520 Titolo precedente (periodici) (Ripetibile)], ([https://web.archive.org/web/2oe_/http://unimarc-it.wikidot.com/520 архів]), Unimarc-IT (італ.)* [http://rusmarc.ru/rusmarc/mf_det51.htm#b520 520 Прежнее заглавие (продолжающиеся ресурсы)], ([https://web.archive.org/web/2oe_/http://rusmarc.ru/rusmarc/mf_det51.htm#b520 архів]), RUSMARC (рос.)