Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (8th εκδ.)

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