Shackleton, S., Shackleton, C., Wynberg, R., Sullivan, C., Leakey, R., Mander, M., McHardy, T., den Adel, S., Botelle, A., du Plessis, P., Lombard, C., Laird, S., Cunningham, T. and O’Reagan, D. 2009. Livelihood trade-offs in the commercialisation of multiple-use NTFPs: Lessons from marula (Sclerocarya birrea subsp. caffra) in southern Africa. In: Shaanker, R.U., Hiremath, A.J., Joseph, G.C. and Rai, N.D. (eds) Non-Timber Forest Products. Conservation, Management and Policy in the Tropics. Ashoka Trust for Research in Ecology and the Environment, Bangalore.