MLA

Humbert, Beatrijs Helga. Phonological Segments : . : Their Structure and Behaviour. The Hague: Holland institute of generative linguistics, 1995.

APA

Humbert, B. Helga. (1995). Phonological segments : . : their structure and behaviour. The Hague: Holland institute of generative linguistics.

Chicago

Humbert, Beatrijs Helga Phonological Segments : .: Their Structure and Behaviour. The Hague: Holland institute of generative linguistics, 1995.