Dignen, B. (2007). Fifty ways to improve your presentation skills in English: Without too much effort. Orient BlackSwan.
Lua i Stíl Chicago (17ú heag.)Dignen, Bob. Fifty Ways to Improve Your Presentation Skills in English: Without Too Much Effort. Hyderabad: Orient BlackSwan, 2007.
Lua MLA (8ú heag.)Dignen, Bob. Fifty Ways to Improve Your Presentation Skills in English: Without Too Much Effort. Orient BlackSwan, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.