1. PRODUCTION ANALYSIS APPLIED TO WORK IMPROVEMENT.
2. Excel reference manual (1984) Microsoft Ltd.
3. Hypertalk reference manual (1987) Apple Computer UK. Ltd.
4. MSc project reports (1987) Department of Civil Engineering, Loughborough University of Technology: (a) Paniagua, H. Productivity study on In-situ concrete operations; (b) Yahya, R. B. Productivity study on craneage operation; (c) Edi, S. B. Productivity study on formwork systems; (d) Jayawardena, A. K. Productivity on brick and blockwork operations.