Gaya APA
Celce-Murcia, M. et al (2011).
Teaching pronunciation : a course book and reference guide (Ed. 2).
NEW YORK:
Cambridge University Press.
Gaya MLA
Celce-Murcia, Marianne. et al.
"Teaching pronunciation : a course book and reference guide".
Ed. 2
NEW YORK:
Cambridge University Press,
2011.
Text.