Clear Speech Student's Book with Integrated Digital Learning: Pronunciation and Listening Comprehension in North American English

Clear Speech Student's Book with Audio CD: Pronunciation and Listening Comprehension in American English

Clear Speech Teacher's Resource and Assessment Book: Pronunciation and Listening Comprehension in North American English

Clear Speech from the Start Student's Book with Integrated Digital Learning: Basic Pronunciation and Listening Comprehension in North American English

Clear Speech from the Start Teacher's Resource and Assessment Book: Basic Pronunciation and Listening Comprehension in North American English