(2007). Professional English in use – ict intermediate to advanced.
Chicago-стиль цитированияProfessional English in Use � Ict Intermediate to Advanced. 2007.
MLA-цитированиеProfessional English in Use � Ict Intermediate to Advanced. 2007.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.