Littlejohn, A. (1999). Cambridge English worldwide: Listening and speaking pack. Cambridge, UK: Cambridge University Press.
Chicago Style aipamenaLittlejohn, Andrew. Cambridge English Worldwide: Listening and Speaking Pack. Cambridge, UK: Cambridge University Press, 1999.
MLA aipamenaLittlejohn, Andrew. Cambridge English Worldwide: Listening and Speaking Pack. Cambridge, UK: Cambridge University Press, 1999.
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