APA-viite

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

Chicago-tyylinen lähdeviittaus

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

MLA-viite

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