Dignen, B. (2007). Fifty ways to improve your presentation skills in English: Without too much effort. Orient BlackSwan.
Dyfyniad Arddull ChicagoDignen, Bob. Fifty Ways to Improve Your Presentation Skills in English: Without Too Much Effort. Hyderabad: Orient BlackSwan, 2007.
Dyfyniad MLADignen, Bob. Fifty Ways to Improve Your Presentation Skills in English: Without Too Much Effort. Orient BlackSwan, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.