APA (7th ed.) Citation

Armstrong, M. (2004). How to be an even better manager (6th ed.). Kogan Page.

Chicago Style (17th ed.) Citation

Armstrong, Michael. How to Be an Even Better Manager. 6th ed. London Sterling, VA: Kogan Page, 2004.

MLA (9th ed.) Citation

Armstrong, Michael. How to Be an Even Better Manager. 6th ed. Kogan Page, 2004.