Cita APA

Rogerson, P., & Gilbert, J. B. (1990). Speaking clearly: Pronunciation and listening comprehension for learners of english. New York: Cambridge University Press.

Citación estilo Chicago

Rogerson, Pamela, y Judy B. Gilbert. Speaking Clearly: Pronunciation and Listening Comprehension for Learners of English. New York: Cambridge University Press, 1990.

Cita MLA

Rogerson, Pamela, y Judy B. Gilbert. Speaking Clearly: Pronunciation and Listening Comprehension for Learners of English. New York: Cambridge University Press, 1990.