APA-čujuhus (7. p.)
ebrary, Inc, Kügler, F., Féry, C., & Vijver, R. F. H. E. v. d. (2009). Variation and gradience in phonetics and phonology. Mouton de Gruyter.
Chicago-čujuhus (17. p.)
ebrary, Inc, Frank Kügler, Caroline Féry, juo Ruben Florentius Hendricus Eduardus van de Vijver. Variation and Gradience in Phonetics and Phonology. New York, NY: Mouton de Gruyter, 2009.
MLA-čujuhus (9. p.)
ebrary, Inc, et al. Variation and Gradience in Phonetics and Phonology. Mouton de Gruyter, 2009.
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