Hewings, M. (1999). Pronunciation plus: Practice through interaction. North American English. Teacher's Manual. Cambridge University Press.
Цитирование в стиле Чикаго (17-е изд.)Hewings, Martin. Pronunciation Plus: Practice Through Interaction. North American English. Teacher's Manual. New York, USA: Cambridge University Press, 1999.
Цитирование MLA (9-е изд.)Hewings, Martin. Pronunciation Plus: Practice Through Interaction. North American English. Teacher's Manual. Cambridge University Press, 1999.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.