Cita APA

Rogerson, P., & Gilbert, J. B. (1990). Speaking clearly: Pronunciation and listening comprehension for learners of English- Student's book. Cambridge: Cambridge University Press.

Chicago Style Citation

Rogerson, Pamela., i Judy B. Gilbert. Speaking Clearly: Pronunciation and Listening Comprehension for Learners of English- Student's Book. Cambridge: Cambridge University Press, 1990.

Cita MLA

Rogerson, Pamela., i Judy B. Gilbert. Speaking Clearly: Pronunciation and Listening Comprehension for Learners of English- Student's Book. Cambridge: Cambridge University Press, 1990.