Huvudgrupp 1

• Campbell, Lyle, Historical linguistics: an introduction, 3., rev. edition, Edinburgh, Edinburgh University Press, [2013]
• Fortson, Benjamin W., Indo-European language and culture: an Introduction, 2. ed., Chichester, Wiley-Blackwell, 2010 [i.e. 2009]
• Millar, Robert McColl, Trask's historical linguistics, 3rd edition., Abingdon, Oxon, Routledge, [2015]

Ytterligare material kan tillkomma.