APA-referens (7:e uppl.)

Harrison, M. (2001). CPE practice tests: Four new tests for the revised Cambridge Certificate of Proficiency in English. Oxford University Press.

Chicago-referens (17:e uppl.)

Harrison, Mark. CPE Practice Tests: Four New Tests for the Revised Cambridge Certificate of Proficiency in English. Oxford: Oxford University Press, 2001.

MLA-referens (8:e uppl.)

Harrison, Mark. CPE Practice Tests: Four New Tests for the Revised Cambridge Certificate of Proficiency in English. Oxford University Press, 2001.