Altschud, J. W., & Witkin, B. R. (2000). From needs assessment to action: Transforming needs into solution strategies (First edition.). Sage Publications, Inc..

Altschud, James W., and Belle Ruth Witkin. From Needs Assessment to Action: Transforming Needs into Solution Strategies. First edition. California: Sage Publications, Inc., 2000.

Altschud, James W., and Belle Ruth Witkin. From Needs Assessment to Action: Transforming Needs into Solution Strategies. First edition. Sage Publications, Inc., 2000.