(1971). Drills and exercises in english pronunciation: Consonats and vowels. New York: Collier-Macmillan international.
Citación estilo ChicagoDrills and Exercises in English Pronunciation: Consonats and Vowels. New York: Collier-Macmillan international, 1971.
Cita MLADrills and Exercises in English Pronunciation: Consonats and Vowels. New York: Collier-Macmillan international, 1971.
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