^Nordhoff, Sebastian; Hammarström, Harald; Forkel, Robert; Haspelmath, Martin biên tập (2013). “Nhóm ngôn ngữ gốc Anh”. Glottolog. Leipzig: Max Planck Institute for Evolutionary Anthropology.
^Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2017). "Anglic". Glottolog 3.0. Jena, Germany: Max Planck Institute for the Science of Human History.
^J. Derrick McClure Scots its range of Uses in A. J. Aitken, Tom McArthur, Languages of Scotland, W. and R. Chambers, 1979. p.27
^Thomas Burns McArthur, The English Languages, Cambridge University Press, 1998. p.203
^Woolf, Alex (2007). “From Pictland to Alba, 789–1070”. The New Edinburgh History of Scotland. Edinburgh: Edinburgh University Press. ISBN978-0-7486-1234-5. Chú thích journal cần |journal= (trợ giúp), p. 336