Wolfgang. (1997). how to easily speak english. Harmoni.
Lua i Stíl Chicago (17ú heag.)Wolfgang. How to Easily Speak English. Jakarta: Harmoni, 1997.
Lua MLA (9ú heag.)Wolfgang. How to Easily Speak English. Harmoni, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.