Peter Roach. (1991). English phonetics and phonology. London: Cambridge Univ. Press.
Chicago Style aipamenaPeter Roach. English Phonetics and Phonology. London: Cambridge Univ. Press, 1991.
MLA aipamenaPeter Roach. English Phonetics and Phonology. London: Cambridge Univ. Press, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.