1. The Useful Plants of West Tropical Africa 1955, 3rd edn, London, Crown Agents.
2. Woody Plants of Ghana 1961, London, Oxford University Press.
3. Rep. Cocoa Res. Inst. Ghana, 1973–74 1976, p. 8.
4. Personal communication, 1976.
5. Oils, Fats and Fatty Foods. Their Practical Examination 1950, 3rd edn, London, J. and A. Churchill.