APA (7th ed.) Citation

Armstrong, M. (1988). How to be an even better manager (2nd ed.). Kogan Page.

Chicago Style (17th ed.) Citation

Armstrong, Michael. How to Be an Even Better Manager. 2nd ed. London: Kogan Page, 1988.

MLA (9th ed.) Citation

Armstrong, Michael. How to Be an Even Better Manager. 2nd ed. Kogan Page, 1988.