Leegaard Knudsen A. Registrum Ecclesie Aboensis eller Åbo Domkyrkas Svartbok. The Black Book of the Cathedral. Facsimile version of the 1890 edition with a new introduction and translations of the original preface and the register of documents with brief introductions. Kansallisarkisto - Riksarkivet 1996.88 + 8 + XXXIII + 668 s., 2 ill. ht [Internet]. 1. januar 1997 [henvist 25. april 2024];16. Tilgængelig hos: https://tidsskrift.dk/historisktidsskrift/article/view/53838