APA (7th ed.) Citation

Brown, S. I., & Walter, M. I. (1993). Problem posing: Reflections and applications. L. Erlbaum Associates.

Chicago Style (17th ed.) Citation

Brown, Stephen I., and Marion I. Walter. Problem Posing: Reflections and Applications. Hillsdale, N.J.: L. Erlbaum Associates, 1993.

MLA (9th ed.) Citation

Brown, Stephen I., and Marion I. Walter. Problem Posing: Reflections and Applications. L. Erlbaum Associates, 1993.