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Dictionary.com (a cupronickel coin and former monetary unit of the United Kingdom, the 20th part of a pound, equal to 12 pence: retained in circulation equal to 5 new pence after decimalization in 1971) dictionary.reference.com. Viitattu 8.7.2010.
riksbank.se
Edvinsson, Rodney, ”The multiple currencies of Sweden-Finland”. Teoksessa Edvinsson, Rodney, Tor Jacobson & Daniel Waldenström (toim.): Historical Monetary and Financial Statistics for Sweden, Volume I: Exchange rates, prices, and wages, 1277–2008, s. 182-183. Tukholma: Ekerlid, Sveriges Riksbank, 2010. ISBN 978-91-7092-124-7Teoksen verkkoversio (PDF) (viitattu 6.5.2020).
saob.se
Svenska Akademiens ordbok: Skilling systemSaob.se. Viitattu 9.2.2022.