Butteriss, M. (2008). Coaching Corporate MVPs (4th.). Prentice-Hall of india Pvt. Ltd.
Lua i Stíl Chicago (17ú heag.)Butteriss, Margaret. Coaching Corporate MVPs. 4th. New Delhi: Prentice-Hall of india Pvt. Ltd, 2008.
Lua MLA (9ú heag.)Butteriss, Margaret. Coaching Corporate MVPs. 4th. Prentice-Hall of india Pvt. Ltd, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.