APA (7th ed.) Citation

Tierney, E. (1997). 30 minutes ..: To boost your communication skills. Kogan Page.

Chicago Style (17th ed.) Citation

Tierney, Elizabeth. 30 Minutes ..: To Boost Your Communication Skills. London: Kogan Page, 1997.

MLA (8th ed.) Citation

Tierney, Elizabeth. 30 Minutes ..: To Boost Your Communication Skills. Kogan Page, 1997.

Warning: These citations may not always be 100% accurate.