1. Arndt, H W, and R M. Sundrum (1980), ‘Employment, Unemployment and Under-Employment’, Bulletin of Indonesian Economic Studies 16 (3), pp. 61–82.
2. Berry, Albert (1975), ‘Unemployment as a Social Problem in Columbia. Myth and Reality’, Economic Development and Cultural Change 23 (2), pp 276–91.
3. Berry, Albert, and Richard Sabot (1978), ‘Labour Market Performance in Developing Countries’, World Development 6 (11/12), pp 1, 199–1, 242.
4. Breman. J.C (1980), The Informal Sector in Research Theory and Practice, Comparative Asian Studies Program, Erasmus University, Rotterdam.
5. Clark, David H (1983), How Secondary School Graduates Perform in the Labor Market A Study of Indonesia, World Bank Staff Working Paper no 615, Washington DC.