APA (7e ed.) Bronvermelding

Dignen, B. (2007). Fifty ways to improve your presentation skills in English. Summertown Publishing.

Chicago (17e ed.) Bronvermelding

Dignen, Bob. Fifty Ways to Improve Your Presentation Skills in English. Oxford: Summertown Publishing, 2007.

MLA (9e ed.) Bronvermelding

Dignen, Bob. Fifty Ways to Improve Your Presentation Skills in English. Summertown Publishing, 2007.