(2006). Cambridge Key English Test 4. With Answers; Examination paper from University of Cambridge ESOL Examinations: English for Speakers of Other Languages. Cambridge, Cambridge University Press, 2006.
Цитирование в стиле Чикаго (17-е изд.)Cambridge Key English Test 4. With Answers; Examination Paper from University of Cambridge ESOL Examinations: English for Speakers of Other Languages. Cambridge, Cambridge University Press, 2006, 2006.
Цитирование MLA (9-е изд.)Cambridge Key English Test 4. With Answers; Examination Paper from University of Cambridge ESOL Examinations: English for Speakers of Other Languages. Cambridge, Cambridge University Press, 2006, 2006.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.