Bell, J., & Harrison, B. T. (1988). Vision and values in managing education: Successful leadership principles and practice. David Fulton Publishers.

Bell, Judith, and Bernard T. Harrison. Vision and Values in Managing Education: Successful Leadership Principles and Practice. London: David Fulton Publishers, 1988.

Bell, Judith, and Bernard T. Harrison. Vision and Values in Managing Education: Successful Leadership Principles and Practice. David Fulton Publishers, 1988.