1. GermanDevelopmentInstitute(1978 ),Industrial Location Behaviour of Malaysian and Foreign Investors-The Efficiency of the Malayan Decentralization Policy.Kuala Lumpur (unpublished).
2. Penang Development Corporation (1972 ),Annual Report of FTZs. Penang.
3. PenangDevelopmentCorporation(1978 ),Annual Report. Penang.