Gaya APA

Cambridge, . (2009). Cambridge IELTS 4 : examination papers from university of cambridge ESOL examination english for speakers of other languages (Cet. 5). Cambridge: Cambridge University Press.

Gaya MLA

Cambridge, . "Cambridge IELTS 4 : examination papers from university of cambridge ESOL examination english for speakers of other languages". Cet. 5 Cambridge: Cambridge University Press, 2009. Text.