John Reynolds. (2013). Cambridge Checkpoint English Workbook 1 ("New, Workbook".). Hodder Education.
Lua i Stíl Chicago (17ú heag.)John Reynolds. Cambridge Checkpoint English Workbook 1. "New, Workbook". Hodder Education, 2013.
Lua MLA (9ú heag.)John Reynolds. Cambridge Checkpoint English Workbook 1. "New, Workbook". Hodder Education, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.