interval

Sources

• NASH 1968 112

  NASH, Rose. (1968) Multilingual Lexicon of Linguistics and Philology: English, Russian, German, French. Coral Gables, FL: University of Miami Press. 

• ONISHI 1981 273-274

  ONISHI, Masao. (1981) A Grand Dictionary of Phonetics. Tokyo: The Phonetic Society of Japan. 

• ELL 4556

  The Encyclopedia of Language & Linguistics. (1994) Oxford: Pergamon Press.

• RICHARDS etal. 1992 322 (interval scale)

  RICHARDS, Jack, PLATT, J. & WEBER, H. (1992) Longman Dictionary of Language Teaching & Applied Linguistics. London: Longman.