APA aipamena

(2007). Cambridge Key English Test 4 (3rd ed.). Cambridge, Cambridge University Press, 2007.

Chicago Style aipamena

Cambridge Key English Test 4. 3rd ed. Cambridge, Cambridge University Press, 2007, 2007.

MLA aipamena

Cambridge Key English Test 4. 3rd ed. Cambridge, Cambridge University Press, 2007, 2007.