Rogerson, P., & Gilbert, J. B. (1990). Speaking clearly: Pronunciation and listening comprehension for learners of English- Student's book. Cambridge: Cambridge University Press.
Citação norma ChicagoRogerson, Pamela., e Judy B. Gilbert. Speaking Clearly: Pronunciation and Listening Comprehension for Learners of English- Student's Book. Cambridge: Cambridge University Press, 1990.
Citação norma MLARogerson, Pamela., e Judy B. Gilbert. Speaking Clearly: Pronunciation and Listening Comprehension for Learners of English- Student's Book. Cambridge: Cambridge University Press, 1990.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.