University of Michigan & Briggs, S. L. (2002). Examination for the certificate of proficiency in English: Official past papers. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)University of Michigan agus Sarah L. Briggs. Examination for the Certificate of Proficiency in English: Official Past Papers. Oxford: Oxford University Press, 2002.
Lua MLA (8ú heag.)University of Michigan agus Sarah L. Briggs. Examination for the Certificate of Proficiency in English: Official Past Papers. Oxford University Press, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.