1. Bannister M. and Josiah S.J. 1993 Agroforestry training and extension: The experience from Haiti. Agroforest Syst 23: 239–251.
2. Bogash S.M. 1998. Marketing of agricultural and natural resource income enterprises: Learning from and sharing with entrepreneurs, pp. 21–25. In: Kays J.S., Goff G.R., Smallidge P.J., Grafton W.N. and Parkhurst J.A. (eds). Natural Resources Income Opportunities on Private Lands Conference. Hagerstown, MD, April 5–7, 1998. University of Maryland Cooperative Extension Service.
3. Campbell R.D. 1991. High value windbreaks for cash crop lands, pp. 177–178. In: Finch S. and Baldwin C.S. (eds). Third International Windbreak and Agroforestry Symposium. Ridgetown College, Ontario, Canada.
4. Clay J. 1992. Some general principles and strategies for developing markets in North America and Europe for nontimber forest products, pp. 302–309. In: Plotkin M. and Famolare L. (eds). Sustainable Harvest and Marketing of Rain Forest Products. Island Press. Washington, D.C.
5. Crawford C.M. and Di Benedetto C.A. 2000. New Products Management. 6th ed. McGraw Hill, Boston. 534 pp.