Hallberg 2008, p. 1700. Hallberg, Göran (14 July 2008). "185. Dialects and regional linguistic varieties in the 20th century I: Sweden and Finland". In Bandle, Oskar; Braunmüller, Kurt; Jahr, Ernst Hakon; Karker, Allan; Naumann, Hans-Peter; Teleman, Ulf; Elmevik, Lennart; Widmark, Gun (eds.). Volume 2: Set Halbbd 1+2. De Gruyter Mouton. pp. 1691–1706. doi:10.1515/9783110197068-067. ISBN978-3-11-019706-8.
Hallberg 2008, p. 1700. Hallberg, Göran (14 July 2008). "185. Dialects and regional linguistic varieties in the 20th century I: Sweden and Finland". In Bandle, Oskar; Braunmüller, Kurt; Jahr, Ernst Hakon; Karker, Allan; Naumann, Hans-Peter; Teleman, Ulf; Elmevik, Lennart; Widmark, Gun (eds.). Volume 2: Set Halbbd 1+2. De Gruyter Mouton. pp. 1691–1706. doi:10.1515/9783110197068-067. ISBN978-3-11-019706-8.