Albrectsen, E. (2017) “Rex Insularum. the King of Norway and His ’Skattlands’ as a Political System c. 1260 - c. 1450. Ed.: Steinar Imsen. Fagbokforlaget, Bergen, 2014”., Historisk Tidsskrift, 116(2), s. 538–544. doi: 10.7146/ht.v116i2.56859.