Widarso, w. (1995). Complete english grammar. Kanisius.
Lua i Stíl Chicago (17ú heag.)Widarso, wishnubroto. Complete English Grammar. Kanisius, 1995.
Lua MLA (9ú heag.)Widarso, wishnubroto. Complete English Grammar. Kanisius, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.