1. Are LA, Gwynne-Jones DR (1974) Uses of cocoa-commercial and local. In: Are LA, Gwynne-Jones DR (eds), Cocoa in West Africa. Ibadan, Nigeria: Oxford University Press, pp. 121?125.
2. Adenikinju SA, Badaru K, Obatolu CR (1989) Harvesting, processing and storage of cocoa, kola, coffee, cashew and tea. In: Progress in tree crop research, 2nd ed. Cocoa Research Institute of Nigeria, pp 47?49.
3. Wood GA (1975) Production and consumption. In: Wood GA (ed), Cocoa, 3rd ed. London: Longman, pp 252?266.
4. Eka OU (1984) A review of studies on changes in nutrient composition of food. Nigerian J Nutr Sci 5: 9?21.
5. AOAC (1975) Official Methods of Analysis. Washington, DC: Association of Official Analytical Chemists.