Hartley, B., & Viney, P. Streamline english. departures: Workbook a units 1-40 (23a ed.).
Lua i Stíl Chicago (17ú heag.)Hartley, Bernard, agus Peter Viney. Streamline English. Departures: Workbook a Units 1-40. 23a ed.
Lua MLA (8ú heag.)Hartley, Bernard, agus Peter Viney. Streamline English. Departures: Workbook a Units 1-40. 23a ed.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.