1. Labor-based Construction Programs. A Practical Guide for Planning and Management;Coukis;OUP for the World Bank,1983
2. Rural Transport Services;Beenhaker,1987
3. Manual on the Planning of Labour-intensive Road Construction;Allal,1977
4. The Rural Access Roads Programme Appropriate Technology in Kenya;de Veen,1980
5. Labor-based Construction Programs. A Practical Guide for Planning and Management;Coukis;OUP for the World Bank,1983