Lehmann, W. P. (1993). Theoretical bases of Indo-European linguistics. Routledge.
Chicago Style (17. basım) AtıfLehmann, Winfred P. Theoretical Bases of Indo-European Linguistics. London: Routledge, 1993.
MLA (9th ed.) AtıfLehmann, Winfred P. Theoretical Bases of Indo-European Linguistics. Routledge, 1993.
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