Cita APA (7a ed.)
Knowles, G. (1987). Patterns of spoken english: An introduction to english phonetics. (1a. ed.). Longman.
Cita Chicago Style (17a ed.)
Knowles, Gerald. Patterns of Spoken English: An Introduction to English Phonetics. 1a. ed. Estados Unidos: Longman, 1987.
Cita MLA (9a ed.)
Knowles, Gerald. Patterns of Spoken English: An Introduction to English Phonetics. 1a. ed. Longman, 1987.
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