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Nelson, V. ORCID: https://orcid.org/0000-0003-1075-0238, Maynard, B., Blowfield, M., Burchell, R., Collinson, C., Tallontire, A. and Thornback, J. (2001) Ethical trade, people and forests (A manual). Natural Resources Institute, Chatham, UK.

Collinson, C., Crentsil, D. and Acheampong, S. (1999) Analysis of the relationship between quality and price of yam in Ghana - second round (NRI report no. 2428). Technical Report. Natural Resources Institute, Chatham, UK.

Collinson, C. (1998) Kokonte expenditure in Ghana: patterns from GLSS3 data (NRI report no. 2382). [Working Paper]