WATCYN-JONES, P. (1986). Test your vocabulary book 1. Penguin Books.
Lua i Stíl Chicago (17ú heag.)WATCYN-JONES, Peter. Test Your Vocabulary Book 1. Middlesex: Penguin Books, 1986.
Lua MLA (9ú heag.)WATCYN-JONES, Peter. Test Your Vocabulary Book 1. Penguin Books, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.