Bell, C. H. E., French, W. L. E., & Zawacki, R. A. E. (1994). Organisation development: Theory, practice and research (Ed.3.).

Bell, Cecil H; Ed, Wendell L; Ed French, and Robert A; Ed Zawacki. Organisation Development: Theory, Practice and Research. Ed.3. New Delhi, Universal, 1994.

Bell, Cecil H; Ed, et al. Organisation Development: Theory, Practice and Research. Ed.3. 1994.