1990
. 1990. “Yams And Megapode Mounds In The Lowland Rain Forest Of Papua New Guinea”. Human Ecology 18 (2): 177-185. doi:10.1007/BF00889181. http://www.jstor.org/stable/4602964.
1989
. 1989. Developing A Partnership Of Indigenous Peoples, Conservationists, And Land Use Planners In Latin America. Policy, Planning, And Research Working Papers -- Environment (Wps 245). Washington, DC: Latin America and the Caribbean Technical Dept., World Bank. http://www.worldcat.org/oclc/29810664.
1987
. 1987. “Land Or Plants: Agricultural Tenure In Agroforestry Systems”. Economic Botany 41 (2): 312-322. doi:10.1007/BF02858978. http://www.jstor.org/stable/4254970.
1985
. 1985. “Dynamics Of Fallow Successions And Introduction Of Robusta Coffee In Shifting Cultivation Areas In The Lowlands Of Papua New Guinea”. Agroforestry Systems 3 (3): 227-238. doi:10.1007/BF00046956. http://link.springer.com/article/10.1007/BF00046956.
. 1985. “Food, Coffee And Casuarina: An Agroforestry System From The Papua New Guinea Highlands”. Agroforestry Systems 2 (4): 273-279. doi:10.1007/BF00147038. http://link.springer.com/article/10.1007/BF00147038.
1980
. 1980. “Forest Conversation Practices In Papua New Guinea”. In Traditional Conservation In Papua New Guinea: Implications For Today. Proceedings Of A Conference Organized By The Office Of Environment And Conservation And The Institute Of Applied Social And Economic Research In Port Moresby [Papua New Guinea], 27-31 October, 1980, 203-216. Boroko, Papua New Guinea: Institute of Applied Social and Economic Research. https://www.worldcat.org/title/10090361.
1974
. 1974. “Sago Production In A New Guinea Economy”. Human Ecology 2 (3): 217-236. http://www.jstor.org/stable/4602300.
