Gibbs, C. J. (1985). Agricultural systems research in Asia: A comparative discussion of human ecology agroecosystems research, farming systems research, and cropping systems research. Agro-ecosystem Research in Rural Resource Management and Development.
Chicago Style (17. basım) AtıfGibbs, Christopher J.N. Agricultural Systems Research in Asia: A Comparative Discussion of Human Ecology Agroecosystems Research, Farming Systems Research, and Cropping Systems Research. [S.l: Agro-ecosystem Research in Rural Resource Management and Development, 1985.
MLA (9th ed.) AtıfGibbs, Christopher J.N. Agricultural Systems Research in Asia: A Comparative Discussion of Human Ecology Agroecosystems Research, Farming Systems Research, and Cropping Systems Research. Agro-ecosystem Research in Rural Resource Management and Development, 1985.