Riddell, R. C., Muir, A., & Robinson, M. (1995). Non-governmental organizations and rural poverty alleviation. Clarendon.

Riddell, Roger C., Ann Muir, and Mark Robinson. Non-governmental Organizations and Rural Poverty Alleviation. Oxford: Clarendon, 1995.

Riddell, Roger C., et al. Non-governmental Organizations and Rural Poverty Alleviation. Clarendon, 1995.