APA (7th ed.) Citation

STEVENS. (1996). How to be a better problem solver. London: Kogan Page, 1996.

Chicago Style (17th ed.) Citation

STEVENS. How to Be a Better Problem Solver. London: London: Kogan Page, 1996, 1996.

MLA (8th ed.) Citation

STEVENS. How to Be a Better Problem Solver. London: Kogan Page, 1996, 1996.