APA (7th ed.) Citation

De Boer, B. (2001). The origins of vowel systems (1. publ.). Oxford Univ. Press.

Chicago Style (17th ed.) Citation

De Boer, Bart. The Origins of Vowel Systems. 1. publ. Oxford [u.a.]: Oxford Univ. Press, 2001.

MLA (9th ed.) Citation

De Boer, Bart. The Origins of Vowel Systems. 1. publ. Oxford Univ. Press, 2001.