Dyfyniad APA

Dignen, B. (2007). Fifty ways to improve your presentation skills in english without too much effort. Orient Blackswan.

Dyfyniad Arddull Chicago

Dignen, Bob. Fifty Ways to Improve Your Presentation Skills in English Without Too Much Effort. Hyderabad: Orient Blackswan, 2007.

Dyfyniad MLA

Dignen, 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.