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.