O'BRIEN, T. (2016). SIMPLY GRAMMAR - BOOK 1. V CONNECT.
Lua i Stíl Chicago (17ú heag.)O'BRIEN, TERRY. SIMPLY GRAMMAR - BOOK 1. NEW DELHI: V CONNECT, 2016.
Lua MLA (9ú heag.)O'BRIEN, TERRY. SIMPLY GRAMMAR - BOOK 1. V CONNECT, 2016.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.