International Symposium on Distribution, Characteristics and Utilization of Problem Soils Tsukuba, & Nihon Dojo Hiryo Gakkai. (1982). Proceedings of a symposium on tropical agriculture research, Tsukuba, October 19-26, 1981. Japanese Society of Soil Science and Plant Nutrition.
Style de citation Chicago (17e éd.)International Symposium on Distribution, Characteristics and Utilization of Problem Soils Tsukuba, et Nihon Dojo Hiryo Gakkai. Proceedings of a Symposium on Tropical Agriculture Research, Tsukuba, October 19-26, 1981. Tokyo: Japanese Society of Soil Science and Plant Nutrition, 1982.
Style de citation MLA (9e éd.)International Symposium on Distribution, Characteristics and Utilization of Problem Soils Tsukuba, et Nihon Dojo Hiryo Gakkai. Proceedings of a Symposium on Tropical Agriculture Research, Tsukuba, October 19-26, 1981. Japanese Society of Soil Science and Plant Nutrition, 1982.