Jakobsen, Jakob. 1928–1932. An etymological dictionary of the Norn language in Shetland. Printed by S. L. Møller, Copenhagen. Foreword by Anna Horsböl, née Jakobsen. Originally published in Danish as Etymologisk ordbog over det norröne sprog på Shetland. Reprinted Lerwick: The Shetland Folk Society, 1985. 1st izdanje. David Nutt (A. G. Berry). Shaftesbury Avenue, London. str. 24, 918CS1 održavanje: format datuma (link)
