Kariuki, IM2025-04-162025-04-162014https://onlinelibrary.wiley.com/doi/epdf/10.1002/agr.21462http://41.89.96.81:4000/handle/123456789/1221enIncentives, Transaction Costs and Social Capital Considerations in Determination of Contract Duration in the Kenyan Smallholder Horticultural Sub-Sector.Article