These were hard times for Skanderberg, but he had an ally, the Hungarian Hunyadi : Episodes in Albanian-Hungarian Historical Contacts / Krisztián Csaplár-Degovics. - 1. vyd. - Budapest : Research Centre for the Humanities, Hungarian Academy of Sciences, 2019. - 340 s. - (Acta Balcano-ungarica, ISSN 2676-914X ; 1.). - ISBN 978-963-416-184-4.