1. Characteristics of the Construction Craft Work Force, SD–77;Construction Industry Institute (CII),1992
2. Return-on-investment (ROI) analysis of education and training in the construction industry, Rep. No. 6;Glover,1999
3. Contractor training programs: a key to company survival, Report;Liska,1994
4. Confronting the skilled construction work force shortage: a blueprint for the future;Business Round Table (BRT),1997
5. Big owners are about to ban contractors that don't train;Krizan;Engineering News Record,1997