1. NAAMSA Commercial Vehicle Sales Cumulative Statistics for the Year 1983;National Association of Automobile Manufacturers of South Africa,1984
2. Vehicle Cost Schedule;Public Carriers' Association,1984
3. The Vulnerability of the Transport Sector in Southern Africa, with Special Reference to Effects of Boycotts in Respect of, Inter Alia, its Energy Needs;Spandau,1977
4. Oil Sanctions against South Africa;Bailey,1978