Roberts, M. J. New Business Ventures and the Entrepreneur, 6ed. McGraw Hill.
Lua i Stíl Chicago (17ú heag.)Roberts, Michael J. New Business Ventures and the Entrepreneur, 6ed. McGraw Hill.
Lua MLA (8ú heag.)Roberts, Michael J. New Business Ventures and the Entrepreneur, 6ed. McGraw Hill.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.