Cita APA (7a ed.)

Roach, P. (1991). English Phonetics and Phponology: A practical course (2a. ed.). University Press.

Cita Chicago Style (17a ed.)

Roach, Peter. English Phonetics and Phponology: A Practical Course. 2a. ed. Cambridge, Mass.: University Press, 1991.

Cita MLA (8a ed.)

Roach, Peter. English Phonetics and Phponology: A Practical Course. 2a. ed. University Press, 1991.