APA (7th ed.) Citation

Sharpe. (1989). Assert yourself: How to do a good deal better with others (2nd ed.). Kogan Page.

Chicago Style (17th ed.) Citation

Sharpe. Assert Yourself: How to Do a Good Deal Better with Others. 2nd ed. London: Kogan Page, 1989.

MLA (8th ed.) Citation

Sharpe. Assert Yourself: How to Do a Good Deal Better with Others. 2nd ed. Kogan Page, 1989.