Denny, R. (2002). Speak for yourself: Tested techniques for improving your communication and presentation skills. Kogan Page ; USB Publishers' Distributors Ltd..
Lua i Stíl Chicago (17ú heag.)Denny, Richard. Speak for Yourself: Tested Techniques for Improving Your Communication and Presentation Skills. London : New Delhi: Kogan Page ; USB Publishers' Distributors Ltd., 2002.
Lua MLA (8ú heag.)Denny, Richard. Speak for Yourself: Tested Techniques for Improving Your Communication and Presentation Skills. Kogan Page ; USB Publishers' Distributors Ltd., 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.