Citazione Stile APA (7a Edizione)

Denny, R. (2002). Speak for yourself: Tested techniques for improving your communication and presentation skills. Kogan Page ; USB Publishers' Distributors Ltd..

Citazione stile Chigago Style (17a edizione)

Denny, Richard. Speak for Yourself: Tested Techniques for Improving Your Communication and Presentation Skills. London : New Delhi: Kogan Page ; USB Publishers' Distributors Ltd., 2002.

Citatione MLA (8a ed.)

Denny, Richard. Speak for Yourself: Tested Techniques for Improving Your Communication and Presentation Skills. Kogan Page ; USB Publishers' Distributors Ltd., 2002.