Holt,David. (1998). Entereprenceur Ship. Prentice-Hall of India Pvt. Ltd.
Lua i Stíl Chicago (17ú heag.)Holt,David. Entereprenceur Ship. Prentice-Hall of India Pvt. Ltd, 1998.
Lua MLA (9ú heag.)Holt,David. Entereprenceur Ship. Prentice-Hall of India Pvt. Ltd, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.