APA (7th ed.) Citation

Robson, M. (1993). Problem solving in groups (2nd ed.). Gower.

Chicago Style (17th ed.) Citation

Robson, Mike. Problem Solving in Groups. 2nd ed. Aldershot: Gower, 1993.

MLA (9th ed.) Citation

Robson, Mike. Problem Solving in Groups. 2nd ed. Gower, 1993.