Qubein, N. R. (2010). Stairway to success. Embassy Book.
Lua i Stíl Chicago (17ú heag.)Qubein, Nido R. Stairway to Success. Mumbai: Embassy Book, 2010.
Lua MLA (9ú heag.)Qubein, Nido R. Stairway to Success. Embassy Book, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.