zero phoneme

Sources

• TRASK 1996 393

  TRASK, R. L. (1996) A Dictionary of Phonetics and Phonology. London: Routledge. 

• HAMP 1963 61

  HAMP, Eric P. (1963) A Glossary of American Technical Linguistic Usage 1925-1950. Utrecht: Spectrum Publishers. 

• CRYSTAL 2003 507

  CRYSTAL, David. (2003) A Dictionary of Linguistics and Phonetics, 5th Ed Oxford: Blackwell.