Journal
. 1994.
Miscellaneous
“Leaders In Sustainable Agriculture: Oral History Interview Series”. Afsic Oral History Interview Series. Beltsville, MD: AFSIC. https://www.nal.usda.gov/afsic/oral-history-interview-series.
. 1991. Report
“People In Between: A Case Study On The Kumil Timber Project, Madang Province, Papua New Guinea”. Copenhagen: International Work Group for Ingineous Affairs. http://www.worldcat.org/oclc/22234105.
. 1990.