APA (7th ed.) Citation

Robson. (1993). Problem solving in groups (2nd ed.). Bookfiled Gower Publishing.

Chicago Style (17th ed.) Citation

Robson. Problem Solving in Groups. 2nd ed. England: Bookfiled Gower Publishing, 1993.

MLA (8th ed.) Citation

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