APA (7th ed.) Citation

Robertson, S. I. (2001). Problem solving (1. publ.). Psychology Press.

Chicago Style (17th ed.) Citation

Robertson, S. Ian. Problem Solving. 1. publ. Hove: Psychology Press, 2001.

MLA (9th ed.) Citation

Robertson, S. Ian. Problem Solving. 1. publ. Psychology Press, 2001.