Razaq, O. (2010). Test your own toefl score, uji skor toefl anda. Pustaka Widyatama.
Lua i Stíl Chicago (17ú heag.)Razaq, Octa. Test Your Own Toefl Score, Uji Skor Toefl Anda. Pustaka Widyatama, 2010.
Lua MLA (8ú heag.)Razaq, Octa. Test Your Own Toefl Score, Uji Skor Toefl Anda. Pustaka Widyatama, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.