surface₂

Sources

• TRASK 1996 344

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

• PALMATIER 1972 174 (surface level)

  PALMATIER, Robert A. (1972) A Glossary for English Transformational Grammar. New York: Appleton-Century-Crofts.

• MATTHEWS 1997 364

  MATTHEWS, P.H. (1997) The Concise Oxford Dictionary of Linguistics. Oxford: Oxford University Press.