Christopher, Dawson
Progress and religion: an historical enquiry
Catholic University of America Press, 20001
 Buku Teks
The handbook of historical linguistics
editor, Brian D. Joseph, Richard D. Janda
Blackwell Publishing, 2006
 Buku Referensi
Campbell, Lyle
Historical linguistics : an introduction
Edinburgh University Press , 2013
 Buku Teks
Lehmann, Winfred P.
Historical linguistics : an introduction
Holt, Rinehart & Winston, 1973
 Buku Teks
Lehmann, Winfred P.
Historical linguistics: an introduction
Holt, Rinehart and Winston, 1962
 Buku Teks