Crowley, T. (1997). An introduction to historical linguistics (3a. ed.). Oxford University Press.
Chicago Style (17. basım) AtıfCrowley, Terry. An Introduction to Historical Linguistics. 3a. ed. Auckland: Oxford University Press, 1997.
MLA (9th ed.) AtıfCrowley, Terry. An Introduction to Historical Linguistics. 3a. ed. Oxford University Press, 1997.
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