Falla, T. New Headway: English course beginner workbook whithout key. 2002.
Lua i Stíl Chicago (17ú heag.)Falla, Tim. New Headway: English Course Beginner Workbook Whithout Key. Estados Unidos Offord University Press: 2002.
Lua MLA (9ú heag.)Falla, Tim. New Headway: English Course Beginner Workbook Whithout Key. 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.