APA (7th ed.) Citation

CHANG & Kelly, P. K. (1993). Step-by-step problem solving: A practical guide to ensure probelms problems get (and stay) solved. Kogan Page.

Chicago Style (17th ed.) Citation

CHANG and P. Keith Kelly. Step-by-step Problem Solving: A Practical Guide to Ensure Probelms Problems Get (and Stay) Solved. London: Kogan Page, 1993.

MLA (9th ed.) Citation

CHANG and P. Keith Kelly. Step-by-step Problem Solving: A Practical Guide to Ensure Probelms Problems Get (and Stay) Solved. Kogan Page, 1993.