↑De Vaan, Michiel (2008) Etymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7)[1], Leiden, Boston: Brill, ISBN9789004167971
↑Ringe, Donald (2006) From Proto-Indo-European to Proto-Germanic (A Linguistic History of English; 1)[2], Oxford: Oxford University Press, ISBN978 0 19 928413 9
↑Derksen, Rick (2015), “nosis”, Etymological Dictionary of the Baltic Inherited Lexicon (Leiden Indo-European Etymological Dictionary Series; 13), Leiden, Boston: Brill, ISBN978 90 04 27898 1, 页357
↑ 8.08.18.2De Vaan, Michiel (2008), “nāris”, Etymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7), Leiden, Boston: Brill, ISBN9789004167971, 页400