Dignen, B. (2007). Fifty ways to improve your presentation skills in english without too much effort. Orient Blackswan.
シカゴスタイル引用形Dignen, Bob. Fifty Ways to Improve Your Presentation Skills in English Without Too Much Effort. Hyderabad: Orient Blackswan, 2007.
MLA引用形式Dignen, Bob. Fifty Ways to Improve Your Presentation Skills in English Without Too Much Effort. Orient Blackswan, 2007.
警告: この引用は必ずしも正確ではありません.