APA-viite (7. p.)

University of Cambridge. (2008). Speaking test preparation pack for Certificate in Advanced English (1a. ed.). University of Cambridge.

Chicago-viite (17. p.)

University of Cambridge. Speaking Test Preparation Pack for Certificate in Advanced English. 1a. ed. Cambridge: University of Cambridge, 2008.

MLA-viite (9. p.)

University of Cambridge. Speaking Test Preparation Pack for Certificate in Advanced English. 1a. ed. University of Cambridge, 2008.