Cita APA (7a ed.)

Roach, P. (2009). English phonetics and phonology: A practical course (4th. ed.). Cambridge University.

Cita Chicago Style (17a ed.)

Roach, Peter. English Phonetics and Phonology: A Practical Course. 4th. ed. Cambridge: Cambridge University, 2009.

Cita MLA (8a ed.)

Roach, Peter. English Phonetics and Phonology: A Practical Course. 4th. ed. Cambridge University, 2009.