APA-čujuhus (7. p.)
Levelt, W. J. M. (1974). Formal grammars in linguistics and psycholinguistics. Mouton.
Chicago-čujuhus (17. p.)
Levelt, W. J. M. Formal Grammars in Linguistics and Psycholinguistics. The Hague: Mouton, 1974.
MLA-čujuhus (9. p.)
Levelt, W. J. M. Formal Grammars in Linguistics and Psycholinguistics. Mouton, 1974.
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