Christopher, Dawson
Progress and religion: an historical enquiry
Catholic University of America Press, 20001
 Buku Teks SO
Lehmann, Winfred P.
Historical linguistics : an introduction
Holt, Rinehart & Winston, 1973
 Buku Teks SO
The handbook of historical linguistics
editor, Brian D. Joseph, Richard D. Janda
Blackwell Publishing, 2006
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Newmeyer, Frederick J.
Generative linguistics : a historical perspective
Routledge, 1996
 Buku Teks SO
Lehmann, Winfred P.
Historical linguistics: an introduction
Holt, Rinehart and Winston, 1962
 Buku Teks SO