{{cite web |url=https://marcus.uib.no/instance/webresource/758cac0e-78b5-49b6-9be0-6fe182f67789 |title=Diplom datert 1377, 9. august. Instanes (Ullensvang, Hordaland). |author=Avdeling for spesialsamlinger |accessdate=Fri Oct 18, 2024 |publisher=University of Bergen Library}}