Book
Man And Tree In Tropical Africa: Three Essays On The Role Of Trees In The African Environment. Ottawa, ON, Canada: International Development Research Centre. http://www.worldcat.org/oclc/5510947.
. 1978. Soil And Water Conservation In Sub-Saharan Africa: Towards Sustainable Production By The Rural Poor: A Report. Amsterdam: International Fund for Agricultural Development (IFAD). http://www.worldcat.org/oclc/30624582.
. 1992. Book Chapter
“Managing Natural Resources For Sustainability”. In Sustainability Issues In Agricultural Development: Proceedings Of The Seventh Agriculture Sector Symposium, 167-181. Washington, DC: World Bank. http://www.worldcat.org/oclc/925356016.
. 1987. Journal Article
“Deforestation: Interdependency Of Fuelwood And Agriculture”. Oikos 46 (3): 404-412. doi:10.2307/3565841. http://www.jstor.org/stable/3565841.
. 1986. “The Guesselbodi Experiment: Bushland Management In Niger”. Rural Africana 23-24: 67-77.
. 1985. “The Need To Build Upon Farmer Practice And Knowledge: Reminders From Selected Upland Conservation Projects And Policies”. Agroforestry Systems 9 (2): 141-153. doi:10.1007/BF00168259. https://doi.org/10.1007/BF00168259.
. 1989. “Some Socioeconomic And Environmental Aspects Of Forest Use By Lowland Farmers In Leyte, Philippines And Their Implications For Agricultural Development And Forest Management”. Philippine Quarterly Of Culture And Society 13 (4): 282-296. http://www.jstor.org/stable/29791868.
. 1985.