Swan, M. (1988). The Cambridge English course 2: Practice book [with key]. Cambridge: Cambridge University Press.
शिकागो स्टाइल उद्धरणSwan, Michael. The Cambridge English Course 2: Practice Book [with Key]. Cambridge: Cambridge University Press, 1988.
एमएलए उद्धरणSwan, Michael. The Cambridge English Course 2: Practice Book [with Key]. Cambridge: Cambridge University Press, 1988.
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