Buckland, P. C. og Perry, D. W. (1989) “Ectoparasites of Sheep from Stdraborg, Iceland and their interpretation: Piss, parasites and people, a palaeoecological perspective”, Hikuin, (15), s. 37–46. Tilgængelig hos: https://tidsskrift.dk/Hikuin/article/view/150609 (Set: 5 december 2025).