APA (7th ed.) Citation

Barker, A. (2006). Improve your communication skills (2nd ed.). Kogan page.

Chicago Style (17th ed.) Citation

Barker, Alan. Improve Your Communication Skills. 2nd ed. London Philadelphia: Kogan page, 2006.

MLA (9th ed.) Citation

Barker, Alan. Improve Your Communication Skills. 2nd ed. Kogan page, 2006.

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